During discharging of alead storage battery

Options

A. The reaction at anode is `Pb rarr Pb^(2+)+2e^(-)`
B. The reaction taking place at cathode is
`Pb^(2+)+2e^(-) rarr Pb`
C. The overall reaction is
`Pb+PbO_(2)+4H^(o+) +2SO_(4)^(2-) rarr 2PbSO_(4)+2H_(2)O`
D. The reaction taking place at cathode is
`PbO_(2)+4H^(o+)+2e^(-) rarr Pb^(2+)+2H_(2)O`

Answer

a,c,d

Explanation

Cathode `:PbO_(2)(s)+2e^(-)+4H^(o+)(aq)+SO_(4)^(2-)(aq)rarr PbSO_(4)(s)+2H_(2)O(l)`
Anode `: Pb(s)+SO_(4)^(2-)(aq) rarr PbSO_(4)(s)+2e^(-)`