Calculate E°_cell and Indicate Whether the Overall Reaction Shown Is

question 39

Multiple Choice

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

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