Problem: Calculate E°cell for each of the following balanced redox reactions.Part A: O2(g) + 2H2O(l) + 4Ag(s) → 4OH−(aq) + 4Ag+(aq)Part B: Br2(l) + 2I−(aq) → 2Br−(aq) + I2(s)Part C: PbO2(s) + 4H+(aq) + Sn(s) → Pb2+(aq) + 2H2O(l) + Sn2+(aq)Part D: Which of the reactions are spontaneous as written. Check all that apply.a) PbO2(s) + 4H+(aq) + Sn(s) → Pb2+(aq) + H2O(l) + Sn2+(aq)b) Br2(l) + 2I−(aq) → 2Br−(aq) + I2(s)c) O2(g) + 2H2O(l) + Ag(s) → 4OH−(aq) + 4Ag+(aq)

FREE Expert Solution

E°cell > 0 spontaneous in the forward direction
E°cell < 0 nonspontaneous in the forward direction


Part A: O2(g) + 2H2O(l) + 4Ag(s) → 4OH(aq) + 4Ag+(aq)

Calculate E°cell.

Ag(s) → Ag(aq) + 1 e                                         E°cell = 0.80 V                    anode

O2(g) + 2H2O(l) + 4 e → 4 OH(aq)                     E°cell = 0.40 V                    cathode

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Problem Details

Calculate E°cell for each of the following balanced redox reactions.

Part A: O2(g) + 2H2O(l) + 4Ag(s) → 4OH(aq) + 4Ag+(aq)

Part B: Br2(l) + 2I(aq) → 2Br(aq) + I2(s)

Part C: PbO2(s) + 4H+(aq) + Sn(s) → Pb2+(aq) + 2H2O(l) + Sn2+(aq)

Part D: Which of the reactions are spontaneous as written. Check all that apply.

a) PbO2(s) + 4H+(aq) + Sn(s) → Pb2+(aq) + H2O(l) + Sn2+(aq)

b) Br2(l) + 2I(aq) → 2Br(aq) + I2(s)

c) O2(g) + 2H2O(l) + Ag(s) → 4OH(aq) + 4Ag+(aq)

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