The Electrochemical Reaction Which Powers a Lead-Acid Storage Battery Is $\to$

question 31

Multiple Choice

The electrochemical reaction which powers a lead-acid storage battery is as follows:
Pb(s) + PbO₂(s) + 4H⁺(aq) + 2SO₄^2-(aq) $\to$ 2PbSO₄(s) + 2H₂O(l)
A single cell of this battery consists of a Pb electrode and a PbO₂ electrode,each submerged in sulfuric acid.What reaction 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(l).

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