02412106 AnalChem_LabReport

รายงานการทดลอง

ปฏิบัติการเคมีวิเคราะห 02-412-106

“There are really only two requirements when it comes to exercise. One is that you do it. The other is continued to do it.”

ชื่อ .......................................................................................สาขาวิชา ......................................................................... กลุม...............................

คณะว

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าสตร

และเท

คโน

โลยี

มหาว

ิทยาล

ัยเทค

โนโล

ยีราช

มงคล

พระน

คร

02-412-106 ปฏิบัติการเคมีวิเคราะห

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รายงานการทดลองปฏิบัติการที่ 1 เรื่อง การวิเคราะหโดยน้ําหนักการทดลองที่ 1.1 การหาปริมาณซัลเฟตไอออนโดยการชั่งน้ําหนักผูทําการทดลอง .....................................................................................................

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วันที่ทําการทดลอง ............................................... วันสงรายงานการทดลอง ...............................................

1. วัตถุประสงคการทดลอง ...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

2. หลักการหรือทฤษฎีที่เกี่ยวของ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................


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3. วิธีการทดลอง............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

4. ผลการทดลอง

ใบที่ 1 ใบที่ 2 ใบที่ 3น้ําหนักสารตัวอยาง (g)

น้ําหนักครูซิเบิล (g) น้ําหนักครูซิเบิล+BaSO4 (g) น้ําหนัก BaSO4 (g) -

% SO42-

% SO42- เฉลี่ยในสารตัวอยาง ± SD

การคํานวณ %SO42-

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5. สรุปและอภิปรายผลการทดลอง................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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รายงานการทดลองปฏิบัติการที่ 1 เรื่อง การวิเคราะหโดยน้ําหนักการทดลองที่ 1.2 การหาปริมาณความชื้นในตัวอยางใบชาผูทําการทดลอง .....................................................................................................

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2. หลักการหรือทฤษฎีที่เกี่ยวของ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................


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3. วิธีการทดลอง............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

4. ผลการทดลองประเภทตัวอยาง .......................................................................................................................................................

ใบที่ 1 ใบที่ 2 ใบที่ 3น้ําหนักสารตัวอยาง (g)

น้ําหนักครูซิเบิล (g) น้ําหนักครูซิเบิล น้ําหนัก -

%ความชื้น%ความชื้นเฉลี่ยในสารตัวอยาง ± SD

การคํานวณ %ความชื้น……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………


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5. สรุปและอภิปรายผลการทดลอง................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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รายงานการทดลองปฏิบัติการที่ 2 เรื่อง การเตรียมและการหาความเขมขนที่แนนอนสารละลายการทดลองที่ 2.1 การเตรียมสารละลายและการหาความเขมขนที่แนนอนสารละลาย NaOHผูทําการทดลอง .....................................................................................................

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3. วิธีการทดลอง3.1 คํานวณและอธิบายวิธีการเตรียมสารละลาย KHP (KHC8H4O4)1) KHP เขมขน 0.1 mol/L ปริมาตร 1000 mL........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

3.2 ขั้นตอนการทดลอง............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

4. ผลการทดลองผลการหาความเขมขนที่แนนอนของสารละลาย NaOH

ครั้งที่ 1 ครั้งที่ 2 ครั้งที่ 3น้ําหนัก KHP (g)

ปริมาตร NaOH (mL)

ความเขมขน NaOH (M)

ความเขมขน NaOH (M) เฉลี่ย ± SD


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แสดงตัวอยาง การคํานวณความเขมขน NaOH ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

5. สรุปและอภิปรายผลการทดลอง.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................


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รายงานการทดลองปฏิบัติการที่ 2 เรื่อง การเตรียมและการหาความเขมขนที่แนนอนสารละลายการทดลองที่ 2.2 การเตรียมสารละลายและการหาความเขมขนที่แนนอนสารละลาย HClผูทําการทดลอง .....................................................................................................

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3. วิธีการทดลอง3.1 คํานวณและอธิบายวิธีการเตรียมสารละลาย HCl1) HCl เขมขน 0.25 mol/L ปริมาตร 1000 mL จากฉลากขางขวดระบุดังนี้ 37%(w/w), d=1.2 g/mL, MW=36.46 g/mol)...........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

3.2 ขั้นตอนการทดลอง......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................


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4. ผลการทดลองผลการหาความเขมขนที่แนนอนของสารละลาย HCl

ครั้งที่ 1 ครั้งที่ 2 ครั้งที่ 3น้ําหนัก Na2CO3 (g)

ปริมาตร HCl (mL) ความเขมขน HCl (M)

ความเขมขน HCl (M) เฉลี่ย ± SD

เขียนปฏิกิริยาการไทเทรต .......................................................................................................................................แสดงตัวอยาง การคํานวณความเขมขน HCl…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

5. สรุปและอภิปรายผลการทดลอง.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................


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รายงานการทดลองปฏิบัติการที่ 3 เรื่อง การไทเทรตกรด-เบสการทดลองที่ 3.1 การหาปริมาณกรดแรในน้ําสมสายชูกลั่นผูทําการทดลอง .....................................................................................................

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3. วิธีการทดลอง3.1 อธิบายขั้นตอนการเจือจางสารตัวอยาง .........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

dilution factor = ...........................................................3.2 ขั้นตอนการทดลอง..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

4. ผลการทดลองตอนที่ 1 การเทียบความเขมขนที่แนนอนของสารละลาย NaOHเขียนปฏิกิริยา ...........................................................................................................................................................

ครั้งที่ 1 ครั้งที่ 2 ครั้งที่ 3น้ําหนัก KHP (g)ปริมาตร NaOH (mL)ความเขมขน NaOH (M)ความเขมขน NaOH (M) เฉลี่ย ± SD


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ตอนที่ 2 การหาปริมาณกรดแร (%w/v) ในน้ําสมสายชูเขียนปฏิกิริยา ...........................................................................................................................................................

อินดิเคเตอร : ……………………………………………………………..

ครั้งที่ 1 ครั้งที่ 2 ครั้งที่ 3ปริมาตรน้ําสมสายชู (mL)

ปริมาตร NaOH (mL) จํานวนโมล NaOH (mol)จํานวนโมล CH3COOH ในสารตัวอยาง (mol)จํานวนกรัม CH3COOH ในสารตัวอยาง (g)% CH3COOH ในสารตัวอยาง% CH3COOH ในสารตัวอยางเฉลี่ย ± SD

แสดงการคํานวณ % (w/v) CH3COOH ในสารตัวอยาง..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

คํานวณ %relative errorคา % (w/v) CH3COOH ที่ระบุขางขวด = ……………………...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................


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5. สรุปและอภิปรายผลการทดลอง................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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รายงานการทดลองปฏิบัติการที่ 3 เรื่อง การไทเทรตกรด-เบสการทดลองที่ 3.2 การหาปริมาณอัลคาลินิตีรวมของโซดาแอชผูทําการทดลอง .....................................................................................................

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3. วิธีการทดลอง................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

4. ผลการทดลองตอนที่ 1 การหาความเขมขนที่แนนอนของสารละลาย HClเขียนปฏิกิริยา ...........................................................................................................................................................

ครั้งที่ 1 ครั้งที่ 2 ครั้งที่ 3น้ําหนัก Na2CO3 (g)

ปริมาตร HCl (mL) ความเขมขน HCl (M)

ความเขมขน HCl (M) เฉลี่ย ± SD


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ตอนที่ 2 ผลการไทเทรตและการหาปริมาณแอลคาลินิตีรวมในโซดาแอช(นักศึกษาออกแบบตารางบันทึกผลการทดลองเอง)

เขียนปฏิกิริยา ...........................................................................................................................................................

อินดิเคเตอร คือ ........................................................................................................................................................

จุดยุติ คือ...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

5. สรุปและอภิปรายผลการทดลอง................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................


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รายงานการทดลองปฏิบัติการที่ 4 เรื่อง การวิเคราะหเชิงปริมาณโดยการไทเทรตการทดลองที่ 4.1 การหาปริมาณคลอไรดโดยวิธีของ Mohrผูทําการทดลอง .....................................................................................................

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3. วิธีการทดลอง3.1 คํานวณและอธิบายการเตรียมสารละลาย1) 0.01 M NaCl ปริมาตร 50 mL.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

3.2 ขั้นตอนการทดลอง..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

4. ผลการทดลองตอนที่ 1 การหาความเขมขนที่แนนอนของสารละลาย AgNO3

เขียนปฏิกิริยา ...........................................................................................................................................................

อินดิเคเตอร คือ ....................................................................ครั้งที่ 1 ครั้งที่ 2 ครั้งที่ 3

น้ําหนัก NaCl (g)ปริมาตร AgNO3 (mL)ความเขมขน AgNO3 (M)ความเขมขน AgNO3 (M) เฉลี่ย ± SD


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ตอนที่ 2 การไทเทรตหาปริมาณคลอไรดในน้ําประเภทน้ําตัวอยาง (ระบุ).........................................................................................................................................เขียนปฏิกิริยา ...........................................................................................................................................................

อินดิเคเตอร คือ ........................................................................................................................................................

จุดยุติ คือ....................................................................................................................................................................

ครั้งที่ 1 ครั้งที่ 2 ครั้งที่ 3ปริมาตรน้ําตัวอยาง (mL) ปริมาตร AgNO3 (mL) จํานวน mg Cl- ในสารตัวอยาง (mg) เฉลี่ย mg Cl- ในสารตัวอยาง ± SD

ตอนที่ 3 การทํา blankครั้งที่ 1 ครั้งที่ 2 ครั้งที่ 3

ปริมาตรน้ํากลั่น (mL) ปริมาตร AgNO3 (mL) ปริมาตร AgNO3 เฉลี่ย (mL)

5. สรุปและอภิปรายผลการทดลอง..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................


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รายงานการทดลองปฏิบัติการที่ 4 เรื่อง การวิเคราะหเชิงปริมาณโดยการไทเทรตการทดลองที่ 4.2 การวิเคราะหหาปริมาณออกซิเจนละลายในน้ําผูทําการทดลอง .....................................................................................................

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3. วิธีการทดลอง3.1 คํานวณและอธิบายการเตรียมสารละลาย1) 0.025 N KH(IO3)2 ปริมาตร 100 mL..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

2) 0.025 N Na2S2O3 ปริมาตร 1000 mL..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

3.3 ขั้นตอนการทดลอง..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................


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4. ผลการทดลองตอนที่ 1 การหาความเขมขนที่แนนอนของ Na2S2O3

น้ําหนัก KH(IO3)2 ………………….. กรัมคํานวณความเขมขน KH(IO3)2 เปน นอรมัล........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

ผลการไทเทรตการหาความเขมขนที่แนนอนของ Na2S2O3

ครั้งที่ 1 ครั้งที่ 2 ครั้งที่ 3ปริมาตร KH(IO3)2 (mL)ปริมาตร Na2S2O3 (mL)จํานวนโมล Na2S2O3 (mol)ความเขมขน Na2S2O3 (N)ความเขมขน Na2S2O3 (N) เฉลี่ย ± SD

แสดงการคํานวณความเขมขนของ Na2S2O3 จากการไทเทรตปฏิกิริยา ………………………………………………………………………… (1)

………………………………………………………………………… (2)........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

อินดิเคเตอร คือ ..........................................................................................................


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ตอนที่ 2 ผลการหาปริมาณออกซิเจนละลายในน้ําตัวอยางประเภทน้ําตัวอยาง (ระบุ).................................................................................................................................

ครั้งที่ 1 ครั้งที่ 2 ครั้งที่ 3ปริมาตรน้ําตัวอยาง mL)ปริมาตร Na2S2O3 (mL)ปริมาณ O2 (mg/L)ปริมาณ O2 เฉลี่ย (mg/L) ในน้ําตัวอยาง ± SD

5. สรุปและอภิปรายผลการทดลอง................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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รายงานการทดลองปฏิบัติการที่ 4 เรื่อง การวิเคราะหเชิงปริมาณโดยการไทเทรตการทดลองที่ 4.3 การวิเคราะหหาความกระดางรวมในตัวอยางน้ําดื่มผูทําการทดลอง .....................................................................................................

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3. วิธีการทดลอง............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

4. ผลการทดลองตอนที่ 1 การหาความเขมขนมาตรฐานสารละลาย EDTAปฏิกิริยาการไทเทรต …………………………………………………………………………….………………………

อินดิเคเตอร คือ .......................................................................ครั้งที่ 1 ครั้งที่ 2 ครั้งที่ 3

น้ําหนัก ZnO (g)ปริมาตร EDTA (mL)ความเขมขน EDTA (M)ความเขมขน EDTA (M) เฉลี่ย ± SD

แสดงการคํานวณหาความเขมขน EDTA ในการไทเทรต...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................


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ตอนที่ 2 การวิเคราะหหาความกระดางรวมในน้ําตัวอยางประเภทน้ําตัวอยาง (ระบุ)...............................................................................................................................ปฏิกิริยาการไทเทรต …………………………………………………………………………

ครั้งที่ 1 ครั้งที่ 2 ครั้งที่ 3ปริมาตรน้ําตัวอยาง (mL)ปริมาตร EDTA (mL)จํานวนมิลลิโมล EDTA (mmol)จํานวนมิลลิโมล CaCO3 (mmol)จํานวน CaCO3 (มิลลิกรัม) ความกระดางรวม (mg/L) ในน้ําตัวอยางความกระดางรวมเฉลี่ย (mg/L) ± SD

แสดงการคํานวณหาความกระดางรวมในน้ําตัวอยาง (หนวย as mg/L CaCO3)............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

5. สรุปและอภิปรายผลการทดลอง...........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................


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รายงานการทดลองปฏิบัติการที่ 5 เรื่อง potentiometric titrationการทดลองที่ 5.1 potentiometric titrationผูทําการทดลอง .....................................................................................................

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3. วิธีการทดลอง............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

4. ผลการทดลอง4.1 ผลการวัดคา pH

VNaOH pH VNaOH pH VNaOH pH VNaOH pH1.0 11.0 22.0 33.02.0 12.0 23.0 34.02.0 13.0 24.0 35.03.0 14.0 25.0 36.04.0 15.0 26.0 37.05.0 16.0 27.0 38.06.0 17.0 28.0 39.07.0 18.0 29.0 40.08.0 19.0 30.09.0 20.0 31.010.0 21.0 32.0


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เขียนกราฟไทเทรชันระหวาง HCl กับ NaOH

4.2 ผลการวัดคา pH VNaOH pH VNaOH pH VNaOH pH VNaOH pH

1.0 14.0 20.0 24.02.0 15.0 20.1 25.02.0 16.0 20.2 26.03.0 17.0 20.3 27.04.0 18.0 20.4 28.05.0 18.5 20.3 29.06.0 19.0 20.4 30.07.0 19.2 20.58.0 19.4 20.69.0 19.5 20.810.0 19.6 21.011.0 19.7 21.512.0 19.8 22.013.0 19.9 23.0


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ผลการหาอนุพันธอันดับหนึ่งVNaOH pH pH V pH/V VNaOH pH pH V pH/V18.0 20.418.5 20.519.0 20.619.2 20.819.4 21.019.5 21.519.6 22.019.7 23.019.8 24.019.9 25.020.020.120.220.3

เขียนกราฟอนุพันธอันดับหนึ่ง


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5. สรุปและอภิปรายผลการทดลอง................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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รายงานการทดลองปฏิบัติการที่ 6 เรื่อง การทําปริมาณวิเคราะหโดยวิธีสเปกโทรสโกปการทดลองที่ 6.1 การหาปริมาณเหล็กรวมในน้ําโดยการวัดการดูดกลืนแสงผูทําการทดลอง .....................................................................................................

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3. วิธีการทดลอง3.1 คํานวณและอธิบายการเตรียมสารละลาย 1000 mg/L Fe ปริมาตร 100 mL จาก FeCl3..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

3.2 คํานวณและอธิบายการเตรียมสารละลาย 10 mg/L Fe ปริมาตร 25 mL จาก 1000 mg/L Fe..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

3.3 ขั้นตอนการทดลอง......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................


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4. ผลการทดลองตอนที่ 1 การหาความยาวคลื่นสูงสุด (max)ความสัมพันธระหวางคาการดูดกลืนแสงและความยาวคลื่น


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ตอนที่ 2 การทํากราฟมาตรฐาน

ขวดที่สารละลายมาตรฐานเหล็ก 10 mg/L คาการดูดกลืนแสง

(Abs) ที่ 510 nmmL ที่ปเปต ความเขมขน (mg/L)123456

ความชัน = ………………………………….

จุดตัดแกน = ………………………………….

สมการเสนตรง จากกราฟมาตรฐาน คือ …………………………………………………...

สมการเสนตรง จากโปรแกรม excel คือ …………………………………………………...

R2 = …………………….


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ตอนที่ 3 การวิเคราะหหาปริมาณเหล็กในน้ําตัวอยาง

ผลการทดลองการทดลองซ้ํา

ขวดที่ 1 ขวดที่ 2 ขวดที่ 3ปริมาตรสารตัวอยาง (mL)คาดูดกลืนแสง (Abs)mg/L Fe จากกราฟมาตรฐานmg/L Fe เฉลี่ยmg/L Fe จากสมการเสนตรงmg/L Fe เฉลี่ย

แสดงการคํานวณ mg/L Fe โดยใชสมการเสนตรง จากโปรแกรม excel ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

5. สรุปและอภิปรายผลการทดลอง.....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

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02412106 AnalChem_LabReport

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