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10 April, 16:32

In a lead-acid storage battery, pbo2 is reduced to

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  1. 10 April, 18:12
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    Lead-Acid storage battery is a secondary cell which can be recharged by passing current through it in the opposite direction.

    Following is the overall chemical reaction operative during discharging of lead-acid battery:

    Pb (s) + PbO2 (s) + 2H2SO4 (aq) → 2PbSO4 (s) + 2H2O (l)

    From above reaction, it can be seen that oxidation state of lead in PbO2 and PbSO4 is + 4 and + 2 respectively. Thus, upon discharging lead oxide is reduced to lead sulphate in lead-acid storage battery.
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