acid and base standarization.pptx

8/16/2019 acid and base standarization.pptx

1/15

Acid and Base Standariza

eated by

ri Aminah 151411003

ptiani Rasidah 1514110

Chemical Engineering


2/15

Otline "resenta

E#ilibrim

Ob$ecti%e

Theory

Tools

&

Ingredient

Methodology

Result

&

Discussion


3/15

Ob$ecti%e

&o demonstrate thebasic laboratory

techni#e o! titration

&o learn to calmolarity base

titrations


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&heory

'igh prityStability (lo) reacti%ity*+o) hygroscopicity (to minimize)eight changes de to hmidity*'igh e#i%alent )eight (tominimize )eighing errors*,3-

.on/toicityReady and cheap a%ailability

secondary standard issally standardizedagainst a primarystandard

https://en.wiktionary.org/wiki/Purityhttps://en.wikipedia.org/wiki/Reactivity_(chemistry)https://en.wikipedia.org/wiki/Hygroscopicityhttps://en.wikipedia.org/wiki/Equivalent_weighthttps://en.wikipedia.org/wiki/Primary_standardhttps://en.wikipedia.org/wiki/Primary_standardhttps://en.wikipedia.org/wiki/Equivalent_weighthttps://en.wikipedia.org/wiki/Hygroscopicityhttps://en.wikipedia.org/wiki/Reactivity_(chemistry)https://en.wiktionary.org/wiki/Purity


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'idro2lorideacid

Sodim'idro2side

Hydrochloric

acid is a clearcolorless highlypngent soltion o!hydrogen chloride ('Cl* in )ater'Cl can se !or

Sodium hydroxid(NaOH) is an a)hite .aO' isa%ailable in pelletsa2es granlesand as prepared

soltions at anmber o! dieren

&heory

https://en.wikipedia.org/wiki/Pungencyhttps://en.wikipedia.org/wiki/Solutionhttps://en.wikipedia.org/wiki/Hydrogen_chloridehttps://en.wikipedia.org/wiki/Hydrogenhttps://en.wikipedia.org/wiki/Chlorinehttps://en.wikipedia.org/wiki/Chlorinehttps://en.wikipedia.org/wiki/Hydrogenhttps://en.wikipedia.org/wiki/Hydrogen_chloridehttps://en.wikipedia.org/wiki/Solutionhttps://en.wikipedia.org/wiki/Pungency


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&heory

•Titration is a method sed in measring thamont o! an analytical reagent necessary t#antitati%ely )ith the sample

• Acid/base titrations are important !or conticoncentrations o! acids and bases

• &he point at )hich the e#i%alence point hareached is called the theoretical end point

• 6n titration sed indicator to detected by somphysical change sch as color change to

indicate the endpoint


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&ools 7 6ngredients

1 &ools

Bea2er 8olmetric 9las2 "ipet

Erlenmeyer as2Spatla

"ipet 9iller

9nnel

analytical balance

Stirrer stic2


8/15

; 6ngredients

A#adest

.aO' 1 .

'Cl 1 .

6ndicator ""

6ndicator


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10/15


11/15

Reslt and >iscssion

•

Standarizasion o! 'ClTrial 1 Trial 2 Trial 3

8olme o! Bora2ssed

5 m+ 5 m+ 5 m+


12/15

Reslt and >iscssion

•

Standarizasion o! .aO'

Trial 1 Trial 2 Trial 3

8olme o! Oalicacid sed

10 m+ 10 m+ 10 m+


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Reslt and >iscssion

•

&he end point o! an acid/base titration is the point the indicator changes color

• E#i%alence point is the point )here there are e#amonts (in moles* o! acid and base

• &he indicator that )e sed in standarizasion o! 'C

methyil red )here the ph range is arond 4 to =• &he indicator that )e sed in standarizasion o! .aO

phenolphthalein )here the ph range is arond ;

• 6n order to ma2e sre that sample dissol%ed comp)e ha%e to sha2e the as2 thoroghly


14/15

Reslt and >iscssion

&he titration cr%e


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acid and base standarization.pptx

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