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 \[\text{P}{{\text{b}}^{\text{2+}}}\]
Correct Answer: C
Solution :
During the charging of a lead acid storage battery, electrode reactions are as follows : Cathode anode: \[P{{b}^{2}}+2{{e}^{-}}\xrightarrow{{}}Pb\] At cathode: \[PbS{{O}_{4}}+2{{H}_{2}}O\xrightarrow{{}}Pb{{O}_{2}}\xrightarrow{{}}SO_{4}^{2-}+2{{e}^{-}}\] or \[P{{b}^{2+}}\xrightarrow{{}}P{{b}^{4+}}+2{{e}^{-}}\]
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