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Which among the following equation represents the reduction reaction taking place in lead accumulator at positive electrode, while it is beings used as a source of electrical energy?A. `Pb to Pb^(2+)`B. `Pb^(4+) to Pb`C. `Pb^(2+) to Pb`D. `Pb^(4+) to Pb^(2+)` |
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Answer» Correct Answer - D In lead accumulator reduction reaction is `underset(O.N.=+4)underset(darr)(PbO_(2)(s)) + 4H^(+)(aq) + SO_(4)^(2-)(aq) to underset(O.N.=+2)underset(darr)(PbSO_(4)(s)) + 2H_(2)O(l)` |
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