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Calculate E°cell and Indicate Whether the Overall Reaction Shown

Question 47

Multiple Choice

Calculate E°cell and indicate whether the overall reaction shown is spontaneous or nonspontaneous.
Calculate E°<sub>cell</sub><sub> </sub> and indicate whether the overall reaction shown is spontaneous or nonspontaneous. Overall reaction: 4Al(s) + 3O<sub>2</sub>(g) + 12H<sup>+</sup>(aq) <font face= symbol ></font> 4Al<sup>3+</sup>(aq) + 6H<sub>2</sub>O(l) A) E°<sub>cell</sub> = -2.891 V, nonspontaneous B) E°<sub>cell</sub> = -2.891 V, spontaneous C) E°<sub>cell</sub> = 2.891 V, nonspontaneous D) E°<sub>cell</sub> = 2.891 V, spontaneous E) Spontaneous, but none of the above values of E°<sub>cell</sub> is correct.
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) Spontaneous, but none of the above values of E°cell is correct.

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