Write the cell reaction which occur in the lead stroage battery
(i) When the battery is in use,
(ii) When the battery is charging.

Explanation

(i) `Pb(s) + PbO_2(s) + 2H_2SO_4(aq) to 2PbSO_4(s) + 2H_2O(l)`
At anode : `Pb(s) + SO_(4)^(2-)(aq) to PbSO_4(s) + 2e^(-)`
At cathode : `PbO_2(s) + SO_(4)^(2-) (aq) + 4H^(+)(aq) + 2e^(-) to PbSO_4(s) + 2H_2O(l)`
(ii) `2PbSO_4(s) + 2H_2O(l) to Pb(s) + PbO_2(s) + 2H_2SO_4(aq)`.