CHEMISTRY EXPERIMENTELECTROLYTE SOLUTION

By Group I:- Aditya Dharma Putra(01)- Agung Budi Prakoso (02)- Alvath Tembria (03)- Andhina Rizkya Satriani (04)- Anissa Rahmani (05)- Argo Afianto (06)

Testing the Electrical Conductivity of Solution

a. Purpose

Students can be able to:

1. Mention the Properties of non-electrolyte and electrolyte solutions

based on the experimental data

2. Classify the solutions into non-electrolyte and electrolyte solutions

based on their electrical conductivity

3. Differ the solution either as electrolyte or non-electrolyte solutions

based on the experimental data

4. Classify the solutions into non-electrolyte, strong electrolyte, and weak

electrolyte

b. Basic Theory

Ion Theory by Svante Arrhenius

Electrolyte solution can conduct electricity because contains free moving ions,

so the ions conduct electricity.

c. Tools and Materials

1. One set apparatus of electrolyte test (4 1.5v batteries, wires, alligator

clips, 3.6 bulb, 2 electrodes)

2. Beaker

glass

3. NaCl

solution

4. H2SO4

solution

5. NaOH

solution

6. Sugar

solution

7. CH3COO

H

solution

8. Ground

water

9. Tap

water

d. Procedures

1. Setting the apparatus of electrolyte test as shown in figure.

2. Put 20ml of NaCl solution in a beaker glass.

3. Test the solution by putting the electrode in the beaker glass.

4. Observe the changes that occur.

5. Wash the electrodes and then drying with a tissue.

6. Repeat the procedure for other solutions.

e. Observation Result

Solution Light No Light Gas No Gas

NaCl X - X -

H2SO4 X - X -

NaOH - X X -

Sugar - X - X

Acetic Acid

(CH3COOH)

X X -

Ground Water - X X -

Tap Water - X - X

f. Data Analysis

NaCl and H2SO4 can conduct electricity, the light was on and they produced

gas.

NaOH, CH3COOH, and ground water can conduct electricity, but the light was

off, though they produced gas.

Sugar and tap water can’t conduct electricity, the light was off and they didn’t

produce gas.

g. Conclusion

The electrolyte solutions can conduct electricity because they contain free

moving ions, such as: NaCl, H2SO4, NaOH, CH3COOH, and ground water.

Non-electrolyte solutions can’t conduct electricity because they remain as

molecules, such as: sugar solution and H2O.

h. Questions

1. Which solution that can or can’t conduct electricity?

- Conduct electricity: NaCl, H2SO4, NaOH, CH3COOH, ground water

Can’t conduct electricity: sugar solution, H2O

2. Mention the properties of solution that can conduct electricity and also

that can’t be an electrical conductivity!

- The properties which can conduct electricity contain free moving ions,

so they can conduct electricity.

The properties which can’t conduct electricity don’t contain ions,

because they remain as molecules.

3. According to the given solution, mention which solutions that can

conduct electricity and which solutions that can’t conduct electricity!

- Conduct electricity: NaCl, H2SO4, NaOH, CH3COOH, ground water

Can’t conduct electricity: sugar solution, H2O

Reference: Erlangga, Chemistry for Grade X, on page 166-168