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

Calculate E°_cell and indicate whether the overall reaction shown is spontaneous or nonspontaneous. O₂(g) + 4H⁺(aq) + 4e⁻ ⇄ 2H₂O(l) E° = 1.229 V
Al³⁺(aq) + 3e⁻ ⇄ Al(s) E° = −1.662 V
Overall reaction:
4Al(s) + 3O₂(g) + 12H⁺(aq) → 4Al³⁺(aq) + 6H₂O(l)

A) E° _cell = −2.891 V, nonspontaneous
B) E° _cell = −2.891 V, spontaneous
C) E° _cell = 2.891 V, nonspontaneous
D) E° _cell = 2.891 V, spontaneous
E) None of these choices are correct.

Correct Answer:

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