1.

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

Answer»

Solution :(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)`.


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