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Which Is the Half-Reaction at the Cathode in a Lead

Question 9

Multiple Choice

Which is the half-reaction at the cathode in a lead storage battery?


A) Pb(s) + PbO2(s) + 4H+(aq) + 2SO42-(aq) → 2PbSO4(s) + 2H2O(l)
B) PbO2(s) + 4H+(aq) + 2SO42−(aq) + 2e− → PbSO4(s) + 2H2O(l)
C) Pb(s) + SO42−(aq) → PbSO4(s) + 2e−
D) Pb(s) → Pb(s) + 2e−
E) H2(g) → 2H+(aq) + 2e−

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