Electrochemistry, rechargeable batteries & fuel cells answers

1. (a) Lead metal(b) Anode (−): Pb + SO42− → PbSO4 + 2e−Cathode (+): PbO2 + 4H+ + SO42− → PbSO4 + 2H2OOverall reaction: Pb + PbO2 + 4H+ + 2SO42− → 2PbSO4 + 2H2O(c) 2PbSO4 + 2H2O → Pb + PbO2 + 4H+ + 2SO42−(d) Since six cells in series gives 12.00 V each cell produces 2.00 V so the EMF = 2.00 VFrom Section 24: Pb → Pb2+ + 2e−E⦵ = − 0.13 VE⦵ for the half-reaction at the cathode = + 1.87 V(e)...

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