The Electrochemical Reaction That Powers a Lead-Acid Storage Battery Is

Multiple Choice

The electrochemical reaction that powers a lead-acid storage battery is as follows: Pb(s) + PbO₂(s) + 4 H⁺(aq) + 2 SO₄^2-(aq) → 2 PbSO₄(s) + 2 H₂O( )
A single cell of this battery consists of a Pb electrode and a PbO₂ electrode,each submerged in sulfuric acid.Which of the following reactions occurs at the cathode during discharge?

A) Pb(s) is reduced to PbSO₄(s) .
B) PbO₂(s) is reduced to PbSO₄(s) .
C) PbO₂(s) is oxidized to PbSO₄(s) .
D) Pb(s) is oxidized to PbSO₄(s) .
E) H⁺ is oxidized to H₂O( ) .