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During the discharge of lead storage battery

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Sulphuric acid is consumed

Lead sulphate is consumed at cathode

Lead sulphate is consumed at anode

Specific gravity of sulphuric acid increases

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Detailed Solution

During the discharge of lead storage battery the net reaction is

$Pb (s) + {PbO}_{2} (s) + 2 H_{2} {SO}_{4} (aq) \overset{2 F}{⇌} 2 {PbSO}_{4} (aq) + 2 H_{2} O (l)$

Sulphuric acid is consumed and Lead sulphate is formed, specific gravity of sulphuric acid decreases

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