Versi terjemahan dari RPP KELAS X SEMESTER 2.docx RPP CHEMICAL High School Lesson Plan: Electrolyte Solution Unit Education: High IMAGE CIVIL Subjects: Chemistry Class / Semester: Class X / II Learning Materials: Electrolyte Solution Time Allocation: 2 x 45 minutes I. Competency Standard: 3. Understanding the properties of non- electrolyte solutions and electrolyte, and oxidation-reduction reaction II. Basic Competence: 3.1 Identify the nature of the non- electrolyte solutions and electrolyte based on data from experiments III. Indicator: A. Cognitive 1. Products: 1. Identifying the nature of non-electrolyte and electrolyte solution.
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Versi terjemahan dari RPP KELAS X SEMESTER 2.docx
RPP CHEMICAL
High School Lesson Plan: Electrolyte Solution
Unit Education: High IMAGE CIVIL
Subjects: Chemistry
Class / Semester: Class X / II
Learning Materials: Electrolyte Solution
Time Allocation: 2 x 45 minutes
I. Competency Standard: 3. Understanding the properties of non-electrolyte solutions and
electrolyte, and oxidation-reduction reaction
II. Basic Competence: 3.1 Identify the nature of the non-electrolyte solutions and electrolyte
based on data from experiments
III. Indicator:
A. Cognitive
1. Products:
1. Identifying the nature of non-electrolyte and electrolyte solution.
2. Grouping the solution into a solution of electrolytes and non-electrolytes based on
electrical conductivity properties.
3. Explaining the cause of the ability of electrolyte solutions conduct electricity
4. Describe the electrolyte solution can be either ionic compounds and polar covalent
compounds.
2. Process:
1. Conduct experiments to identify the nature of non-electrolyte and electrolyte
solutions and classify solutions based on the known properties.
1. Answering questions before the experiment (responsiveness) is done.
2. Conducting experiments.
3. Filling table observations.
4. Draw conclusions.
5. Answering questions after the experiment performed.
2. Mend iskusikan the cause electrolyte solutions conduct electricity.
3. Discuss the form of an aqueous electrolyte can form ionic compounds and
covalent compounds.
B. Affective
1. Character:
a. confidence;
b. honest;
c. carefully;
d. be careful;
e. working together;
f. curiosity and
g. responsibility.
2. Social Skills:
a. asked;
b. found or contribute ideas;
c. be a good listener and communicate.
C. Psychomotor
1. Assembling a test electrolyte.
2. Test the electrical conductivity of the solution.
IV. Objective Learning
A. Cognitive
1. Products:
1. Students can independently identify the nature of non-electrolyte and electrolyte
solutions based on the experimental results.
2. Students can independently classify the solution to a solution of electrolytes and
non-electrolytes based on the nature of the electrical conductivity.
3. Students independently explains the ability of electrolyte solutions conduct
electricity
4. Students can independently describe the electrolyte solution can be either ionic
compounds and polar covalent compounds.
2. Process:
1. Given the tools, materials and LKS High School students can carry out
experiments to identify the nature of non-electrolyte and electrolyte solutions and
classify solutions based on known properties. Process (answering questions
before the experiment performed (responsiveness), to experiment, to fill the tables
of observations, conclusions mbuat me and answer questions after the
experiment).
2. With textbook learning students can discuss the causes of electrolyte solutions
conduct electricity.
3. With textbook learning students can discuss the form of an aqueous electrolyte
ions to form compounds and covalent compounds.
B. Affective
1. Character:
Involved in the student-centered learning, students are assessed at least made
progress in demonstrating the character confident, honest, thorough, careful, working
together, curiosity and responsibility.
2. Social Skills:
Involved in the student-centered learning, students are assessed at least made
progress in demonstrating behavioral social skills to ask, argue or contribute ideas,
be a good listener and communicate.
C. Psychomotor
1. Provided equipment, materials, and LKS High School, students can assemble a
test electrolyte.
2. Provided equipment, materials, and LKS High School, students can test the
electrical conductivity of the solution.
V. Teaching Materials
1. Understanding Electrolytes and Non-Electrolytes
Based on the electrical conductivity, the solution can be divided into a
solution of the electron, which is a solution that can deliver electricity, and
nonelectrolyte solution, that solution can not deliver electricity. Conducting electricity
through the solution can be shown by a test electrolyte as shown.
The flow of electricity through a solution characterized by menyalanya
incandescent bulbs in series and / or the presence of a change (eg arising bubble) on
one elektrodenya.
2. Strong and Weak Electrolytes Electrolytes
Differences strong electrolyte and a weak electrolyte is described by the
following picture.
In the picture, the two solutions each containing 10 molecules dissolved. In
strong electrolytes, most or all of the molecules break down into ions, whereas the
weak electrolyte, only small molecules mengion sebaigan.
Many electrolytes least mengion stated ionization degree or degrees of
dissociation (Î ±), the ratio between the amount of a substance that mengion the
amount of dissolved substances.
If all mengion dissolved substances, the degree of ionization = 1; otherwise, if
no one mengion the degree of ionization = 0. Thus, the limits of the value of the degree
of ionization (Î ±) is 0 â ‰ ¤ Î ± â ‰ ¤ 1.
Substances that have a degree of ionization of electrolytes large (approaching
1) we call strong electrolytes, while the degree of ionization is small (close to 0) we
call a weak electrolyte. Strong electrolyte conductivity has a relatively good, although
concentration is relatively small, whereas a weak electrolyte has a relatively poor
conductivity, although concentration is relatively large. At the same concentration, has
a strong electrolyte conductivity is better than a weak electrolyte.
3. Svante Arrhenius Ion Theory
In 1887, Arrhenius successfully explain the electrical conductivity through the
electrolyte to the theory of ionization. According to Arrhenius, an electrolyte solution
can deliver electricity because it contains ions that can move freely. The ions that
which delivers an electric current through the solution. As has been observed in
Activity 6.1, NaCl, HCl, NaOH, and CH 3 COOH classified as electrolytes. These
substances in water decomposes into ions as follows.
NaCl Na + (aq) + Cl - (aq)
HCl (g) H + (aq) + Cl - (aq)
NaOH (s) Na + (aq) + OH - (aq)
CH 3 COOH (l) CH 3 COO - (aq) + H + (aq)
The nonelectrolyte substances in solution does not decompose into ions, but
remains in the form of molecules.
4. Compound Electrolyte Ion and Polar Covalent Compounds
a. Compound Ion
As already known, the ionic compound composed of ions, such as
NaCl and NaOH. NaCl consists of Na + ions and Cl -, whereas NaOH consisting of
Na + ions and OH -. In Crystals (solids), the ions can not move freely, but silent in
place. Therefore, the solid ionic compounds do not deliver electricity. However, if
the ionic compounds are melted or dissolved, the ions can move freely, so that the
melt and solution ionic compound to deliver electricity.
b. Polar Covalent Compounds
As you know, some are polar molecules, such as water molecules, HCl,
and CH 3 COOH; while others are nonpolar, such as CH 4. Because they are polar,
the water we refer to as a polar solvent.
Various substances with polar molecules, such as HCl and CH 3 COOH,
when dissolved in water, can be ionized so that the solution can deliver electricity.
It happened because there was a polar intermolecular attractive force that can
break certain bonds in the molecule. Consider re-ionization of HCl and CH 3
COOH follows.
HCl (g) H + (aq) + Cl - (aq)
CH3COOH (l) CH3COO - (aq) + H + (aq)
However, not all polar molecules can ionize in water. Nonpolar molecules,
as can be expected, none of it is an electrolyte.
The difference between the electrolyte ionic compounds with polar covalent
compounds summarized as follows.
Power Type Solids The melt Solution
Ionic compounds
Compound
covalent
Nonkonduktor
nonkonduktor
Conductor
nonkonduktor
Conductor
conductor
VI. Models and Methods of Learning
Model learning: Cooperative Learning Model
Learning Methods: Experiments, discussions, presentations and giving the task
VI. Material
1. Distilled water
2. 70% ethanol solution
3. 1 M HCl solution
4. 1 M NaOH solution
5. 1 M solution of acetic acid
6. Ammonia solution
7. Sugar solution 1 M
8. 1 M NaCl salt solution
9. 0.1 M NaCl saline solution
10. 0.01 M NaCl saline solution
11. Solid sodium chloride
VII. Equipment
1. Voltage source (battery) : 4 pieces
2. P apan pedestal : 2 pieces
3. Fluorescent light : 1 piece
4. Bars electrode : 2 sticks
5. Beaker : 1 piece
6. K abel connector and clamp : 1 package
7. Cleaning wipes : 1 roll
VIII. Teaching and Learning
A. Introduction (10 minutes)
Activity Time
1. Motivating students to demonstrate a wide range of non-electrolyte
and electrolyte solutions that are often encountered in life to foster
curiosity, along with the question whether the solution is there that
can conduct electric current? (Phase 1 MPK)
2. Communicate the purpose of learning products, processes,
psychomotor, social skills, and character. (Phase 1 MPK)
10
minutes
B. Core (70 minutes)
Activity Time
Fragment 1 70
1. Organizing students in cooperative groups and distribute clogs
pok LKS SM A for each group (equipment and materials have
been prepared earlier in a.) Each group consists of 4-5 students.
(Phase 3 MPK)
2. Ask students to answer questions before the experiment
performed (responsiveness) on worksheets that have been given
with confidence and honest in answer that question in accordance
knowledge. (Phase 4 MPK)
Fragment 2
3. Guiding the group carrying out the experiment using appropriate
tools and materials written procedures in LKS BC A
4. Guiding students assemble experimental apparatus and test
electrical conductivity each solution thoroughly and carefully fill
the table continued with observations. (Phase 4 MPK)
5. Conducting formative evaluation with psychomotor performance
assessment by observing the student's ability to demonstrate the
skills test tools and test stringing electrical conductivity at each
solution. (Phase 5 MPK)
Fragment 3
6. Asked each of the students in each group to be responsible upon
completion of the experiment. (Phase 4 MPK)
7. Ask students to draw conclusions from the experiments that have
been carried out, stressing the need to work together and listen to
the idea after a friend as well as answering questions of existing
trials on LKS High School. (Phase 4 MPK)
8. The two groups were asked to communicate the (present) results
work in the classroom to provide convenience formative teacher
evaluation and give other students the opportunity to learn to be a
good listener. (Phase 5 MPK)
minutes
Fragment 4
9. Ask students to discuss the work together and found or
contribute ideas about the cause of electrolyte solutions conduct
electric current and the electrolyte solution form that can be
either ionic compounds and covalent compounds.
10. Ask for 1-2 group presented the results of their discussion to
explain the causes of electrolyte solutions conduct electricity and
describe the form of an aqueous electrolyte can form ionic
compounds and covalent compounds and give other students the
opportunity to learn to be a good listener. (Phase 5 MPK)
11. Provide opportunities for students to respond to (argue) and
asked about the explanation of the other students with regard to
the cause of electrolyte solutions conduct electricity and form an
electrolyte solution to form ionic compounds and covalent
compounds.
12. Responding to students' opinions and questions about the cause
of electrolyte solutions conduct electricity and form an
electrolyte solution to form ionic compounds and covalent
compounds. (Phase 2 MPK)
13. Giving awards to individuals and groups that are performing well
and is very good in the teaching and learning activities. (Phase 6
MPK)
C. Closing (10 minutes)
Activity Time
1. M enutup lessons to guide students to make inferences from the
material of electrolyte solutions based on the experimental
results, discussions and presentations as well as giving
homework to determine the level of students' understanding of
the material that has been conveyed.
10
Minutes
X. Learning Resources
1. LKS BC A Electrical Conductivity in Solution
2. A key LKS SM Electrical Conductivity in Solution
3. L P 1: Key products include LP 1
4. LP 2: Process
5. LP 3: Psychomotor
6. LP 4: Bird Behavior Character
7. LP 5: Observation of Social Skills
8. Table Specifications Sheet Assessment
9. Syllabus
Bibliography
Johnson, David W. & Johnson, Roger T. , 2002. Meaningful Assessment. A Manageable and
Cooperative Process. Boston: Allyn & Bacon.
Chemistry Students Reg. A. Of 2012. Draft High School Chemistry (Task Group, Planning
Purba, Michael. , 2006. Chemistry for Class X High School. Jakarta: grants.
Santosa, Sri. Juari, et al. , 2004. Chemistry for Class X Volume IB school. Klaten: Intan Pariwara.
Sudarmo, Superior. , 2006. Chemistry for Class X High School. Jakarta: PT. Various Phibeta
Gama.
STUDENT WORKSHEET SMA
Electrical Conductivity in Solution
Experiments Electrolyte Solution
a. Destination
Proving properties of electrolyte or non electrolyte solution based on the symptoms caused by
the solution.
b. Responsibility
Fill in the blanks below with the correct! (Preliminary / per group)
1. Solution adalaha € | ..
2. Electrolyte solutions adalaha € | ..
3. Nonelectrolyte solution adalaha € | ..
4. Electrolyte solution divided 2 yaituâ € | ..
5. The characteristics of a weak electrolyte solution adalaha € | ..
6. The characteristics of a strong electrolyte solutions adalaha € | ..
7. The characteristics of non-electrolyte solution adalaha € | ..
8. A solution can conduct electricity resulting in the solution occurs peristiwaâ € | ..
c. Tools and materials
1. Tool:
a. Voltage source (battery) : 4 pieces
b. Lapboard : 2 pieces
c. Fluorescent light : 1 piece
d. Bars electrode : 2 sticks
e. Beaker : 1 piece
f. Connecting cable and clamp : 1 package
g. Cleaning wipes : 1 roll
2. Ingredients:
a. Distilled water
b. 70% ethanol solution
c. 1 M HCl solution
d. 1 M NaOH solution
e. 1 M solution of acetic acid
f. Ammonia solution
g. Sugar solution 1 M
h. 1 M NaCl salt solution
i. 0.1 M NaCl saline solution
j. 0.01 M NaCl saline solution
k. Solid sodium chloride
d. How it Works
1. Compose equipment like the picture below!
2. The positive pole of the battery is connected to the lights.
3. Of light, the cable is connected to the electrode pole (+).
4. Polar electrode (-) is connected back to the battery negative pole.
5. Dip the electrode into the liquid
6. Note the lights (bright, dim, or no light), and the presence or absence of gas bubbles on
the electrode.
7. Disconnect the power to temporarily
8. Replace the solution with other solvents.
9. Clean the electrode with water, then dried with a tissue.
10. Stream back electric current.
11. Do it for each ingredient
e. Observation Results No Material Flash Lights Gas bubbles Type of
solution 1 Distilled water 2 70% ethanol solution 3 1 M HCl solution 4 1 M NaOH solution 5 1 M solution of acetic acid 6 Ammonia solution of 1 M 7 Sugar solution 1 M 8 1 M NaCl 9 0.1 M NaCl solution 10th 0.01 M NaCl solution 11th Solid NaCl
f. Conclusion
1. Group of non-electrolyte solution is ......
2. Weak electrolyte solution group adalaha € | â € |
3. Group of strong electrolyte solutions adalaha € | â € |
g. Answer the question below correctly! (People)
1. Why electrolyte solution can conduct electricity? Describe the events that occur at the
time power is applied in the solution!
2. NaCl is an electrolyte substance. In solution can conduct electricity, but in the solid state
can not conduct electricity. Why is that?
3. How does the concentration of the solution of the electrical conductivity of the solution?
STUDENT WORKSHEET KEY High School
Electrical Conductivity in Solution
Experiments Electrolyte Solution
a. Responsibility
1. The solution is a homogeneous mixture between the solute and solvent.
2. Electrolyte solution is a solution that can conduct electricity.
3. Non-electrolyte solution is a solution that can not conduct electricity.
4. Weak and strong electrolyte solutions.
5. Weak electrolyte solution has a weak electrical conductivity characterized by dim lights,
or no lights, but still causing gas bubbles.
6. Strong electrolyte solutions have large electric conductivity, characterized by bright
lights, and a gas bubble.
7. Non-electrolyte solution can not power menghatarkan marked with no lights and no gas
bubbles anyway.
8. Ionization.
b. Observation Results No Material Flash Lights Gas bubbles Type of solution
1 Distilled water Not lit There is no Non electrolyte 2 70% ethanol solution Not lit There is no Non electrolyte 3 1 M HCl solution Light There is Electrolyte 4 1 M NaOH solution Light There is Electrolyte 5 1 M solution of acetic acid Not lit There is Electrolyte 6 Ammonia solution of 1 M Not lit There is Electrolyte 7 Sugar solution 1 M Not Burning There is no Non electrolyte
8 1 M NaCl Light There is Electrolyte 9 0.1 M NaCl solution Light There is Electrolyte 10th 0.01 M NaCl solution Light There is Electrolyte 11th Solid NaCl Not lit There is no -
c. Conclusions
1. Group of non-electrolyte solutions: distilled water, 70% ethanol and sugar solution.
2. Group of weak electrolyte solution: a solution of vinegar and ammonia.
3. Group of strong electrolyte solutions: HCl, NaOH and NaCl.
d. Answer Questions
1. The solution can conduct electricity as long as the electric current flux ionization event occurs.
The solution produces ionized ions (+) and ion (-). Ion (+) will move to the electrode (-) ions
whereas (+) will move to the electrode (-). So that the solution can conduct electricity.
2. In solid form, the distance between molecules is very tight, the touch surface molecule or ion
is also very small so that the flow of electricity through the intermolecular space to
experience obstacles, a touch of electrons in a molecule or ion is very little. As a result, the
energy of the electrical current is not able to turn the lights on and not being able to change a
solid into a gas molecule NaCl.
3. The greater the concentration of a solution the greater the electrical conductivity.
Sources: Chemistry Student Reg. A. Of 2012. RPP CHEMICAL SMA (Task Group, Planning