Calculate E cell and indicate whether the overall reaction shown is spontaneous

Question

Calculate E cell and indicate whether the overall reaction shown is spontaneous or nonspontaneous.

Overall reaction:

2Fe3+(aq) + 2H2O(l) ? H2O2(aq) + 2H+(aq) + 2Fe2+(aq)

A. Ecell = -1.00 V, nonspontaneous B. Ecell = -1.00 V, spontaneous C. Ecell = 1.00 V, nonspontaneous D. Ecell= 1.00 V, spontaneous Calculate E cell and indicate whether the overall reaction shown is spontaneous or nonspontaneous. H2O2(aq) + 2H+(aq) + 2e- 2H2O(l) E = 1.77 V Fe3+ (aq) + e- Fe2+(aq) E = 0.77 V Overall reaction: 2Fe3+(aq) + 2H2O(l) ? H2O2(aq) + 2H+(aq) + 2Fe2+(aq) A. Ecell = -1.00 V, nonspontaneous B. Ecell = -1.00 V, spontaneous C. Ecell = 1.00 V, nonspontaneous D. Ecell= 1.00 V, spontaneous

Explanation / Answer

The answer is A: -1.00V, nonspontaneous

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