Question

During the charging of a lead-acid storage battery, the cathode reaction is

• A. formation of $\text{PbS}{\text{O}}_4$
• B. reduction of $\text{P}{\text{b}}^{\text{2+}}$ to Pb
• C. formation of $\text{Pb}{\text{O}}_{\text{2}}$
• D. oxidation of Pb to $\text{P}{\text{b}}^{\text{2+}}$

Answer 1

Answer: (C)

During the charging of a lead acid storage battery, electrode reactions are as follows : Cathode anode: $P{b}^2+2e^{-}\to Pb$ At cathode: $PbS{O}_4+2H_{2}O\to Pb{O}_2\to S{O}_4^{2-}+2e^{-}$ or $P{b}^{2+}\to P{b}^{4+}+2e^{-}$