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The standard voltage of the voltaic cell (E ° cell) based on the given half-reactions and...

The standard voltage of the voltaic cell (E ° cell) based on the given half-reactions and the number of moons of electrons (n) transferred in the redox reaction are:
Ni2 + (ac) + 2e- = Ni (s) E ° = -0.25V
Al3 + (ac) + 3e- = Al (s) E ° = -1.66V

A. E ° cell = -1.91V and n = 5 mol e-
B. E ° cell = + 1.91V and n = 6 mol e-
C. E ° cell = + 1.91V and n = 5 mol e-
D. E ° cell = + 1.41V and n = 6 mol e-
E. E ° cell = + 1.41V and n = 5 mol e-

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