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  • While charging the lead storage battery ______________. (i) PbSO_{4} anode is reduced to Pb

While charging the lead storage battery ______________.

(i) PbSO_{4} anode is reduced to Pb

(ii) PbSO_{4} cathode is reduced to Pb

(iii) PbSO_{4} cathode is oxidised to Pb

(iv) PbSO_{4} anode is oxidised to PbO_{2}

Answers (1)

The answer is the option (i)

Reduction at Anode: PbSO_4 (s)+2e^-\rightarrow Pb(s)+SO_{4}^{2-} (aq) (Reduction)

Oxidation at Cathode: PbSO_4 (s)+2H_2 O\rightarrow PbO_2 (s)+SO_{4}^{2-}+4H^++2e^-

Overall reaction : 2PbSO_4 (s)+2H_2 O\rightarrow Pb(s)+PbO_2 (s)+4H^++2SO_{4}^{2-}

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