Calculate E°cell and indicate whether the overall reaction shown is spontaneous or nonspontaneous. Co3+(aq) + e− ⇄ Co2+(aq) E° = 1.82 V
MnO4−(aq) + 2H2O(l) + 3e- ⇄ MnO2(s) + 4OH−(aq) E° = 0.59 V
Overall reaction:
MnO4−(aq) + 2H2O(l) + 3Co2+(aq) → MnO2(s) + 3Co3+(aq) + 4OH−(aq)
A) E° cell = -1.23 V, spontaneous
B) E° cell = -1.23 V, nonspontaneous
C) E° cell = 1.23 V, spontaneous
D) E° cell = 1.23 V, nonspontaneous
E) E° cell = -0.05 V, nonspontaneous
Correct Answer:
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