Electrolysis Experiments

1. Put on gloves.

2. Place two test tubes in a 12-groove plate.

3. Add salt water to each of the two test tubes.

4. Add a free drop of phenolphthalein indicator or BTB indicator to each of the salted test tubes. (Do not add two indicators to one test tube.) .

5. Place the salt bridge in both test tubes.

6. Place the carbon rod in two test tubes.

7. Connect the + and - poles of the carbon rod and the battery with a piece of wire.

8. Observe the change. Change the electrodes and observe.