1.

In charging the lead accumulator battery

Answer»

`PbO_(2)` DISSOLVES
`H_(2)SO_(4)` is reproduced
`PbSO_(4)` deposits on lead electrode
Pb deposits on lead eletrode

Solution :Reactions taking place during charging i.e., when electrical energy is supplied to it from an external field.
`2PbSO_(4(s))+2H_(2)OtoPb_((s))+PbO_(2(s))`
`+4H_((aq))^(+)+2SO_(4(aq))^(2-)`.


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