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Describe an experiment to charge and discharge a simple secondary cell

Describe an experiment to charge and discharge a simple secondary cell.

Answers

Raphael
Experiment: To charge and discharge a simple secondary cell

Procedure:
1. Set up the apparatus as shown below.
2. Close the switch S1 and observe the changes in the plates if any.
3. Note how the ammeter reading varies with time.
simplesecondarycell1110.jpg
Discussion:
When charging oxygen is produced at the anode and hydrogen at the cathode. The oxygen reacts with lead to form lead (IV) oxide which is deposited at the anode. The hydrogen formed has no effect. When discharging current flows in opposite direction with oxygen being formed at the cathode and hydrogen at the anode. The colour of the positive electrode changes from brown to grey.
raphael answered the question on October 11, 2018 at 07:29

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