Question

When lead storage battery is charged.

• A. Lead dioxide dissolves
• B. Sulphuric acid is regenerated
• C. The lead electrode becomes coated with lead sulphate
• D. The amount of sulphuric acid decreases

Answer 1

Answer: (B)

Sulphuric acid is regenerated

Answer 2

During charging of a lead storage battery, the reaction at the anode and cathode are

Anode: $PbSO_{4} + 2e^{-} \rightarrow Pb + SO_{4}^{2 -}$

Cathode : $PbSO_{4} + 2H_{2}O \rightarrow PbO_{2} + 4H^{+} + SO_{4}^{2 -} + 2e^{-}$

In both the reactions $H_{2}SO_{4}$ is regenerated.