First slide

Batteries

Question

During the discharge of lead storage battery, weight of ${PbSO}_{4}$ obtained at cathode involving of 1F of electricity is(At.Wt of Pb = 208)

Difficult

Solution

During the discharge of lead storage battery,
At cathode
${PbO}_{2} + {SO}_{4}^{- 2} + 4 H^{+} + 2 e^{-} \to {PbSO}_{4} + 2 H_{2} O$
$2 F - - - 304 g of {PbSO}_{4}$
$1 F - - - - 152 g of {PbSO}_{4}$

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