Explain discharging and charging process of lead acid storage cell.

Explain discharging and charging process of lead acid storage cell. 
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1 Answer

Answer :

Discharging: - While discharging chemical energy gets converted into electrical energy.

At anode: - The lead electrode loses electrons, which flow through the wire.

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Lead sulphate is precipited at both the electrodes. As sulphuric acid is utilized & H2O is formed in the process, concentration of H2SO4 will decrease, then battery should be charged.  


Charging: - To recharge a lead storage cell, the reactions taking place during discharging are reversed by passing an external e.m.f. greater than 2 volts from a generator.

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