Consider the reaction that takes place at the cathode

Question

during the charging of a lead acid battery. what are the reactants of this reaction?

Answer 1

cathode,charging:PbSO4 + 2*e- >Pb +(SO4)2--

beware,dr.a don.t talk about charging.i love to give warnings.

it.s good not to be taken seriously,cause mistakes cost.other people...

Answer 2

Anode ( oxidation):

Pb (s) + HSO4- (aq) + H2O (l)<--> PbSO4 (s) + H3O+ (aq)+ 2e-

Cathode (reduction):

PbO2 (s) + 3 H3O+ (aq)+ HSO4- (aq) + 2e- <--> PbSO4 (s) +5 H2O (l)

The reaction is :

Pb + PbO2 + 2 HSO4- + 2 H3O+ <--->  2 PbSO4 + 4 H2O