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NCERT Class XII Chemistry
Chapter - Electrochemistry
Questions with Solutions

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Question : 31 of 32
Marks: +1, -0
Write the chemistry of recharging the lead storage battery, highlighting all the materials that are involved during recharging.
Solution:  
Chemical reactions while recharging:
2PbSO4+2H2O→PbO2+Pb+2H2SO42\mathrm{PbSO_4} + 2\mathrm{H_2O} \rightarrow \mathrm{PbO_2} + \mathrm{Pb} + 2\mathrm{H_2SO_4}
Electricity is passed through the electrolyte PbSO4\mathrm{PbSO_4} which is converted intoPbSO2\mathrm{PbSO_2} and Pb\mathrm{Pb}.
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