Calculate the standard cell potential of a Al/Al 3+ | Cd/Cd2+ voltaic cell.
Al3+ (aq) + 3e– → Al(s) E ̊red = –1.66 V
Cd2+ (aq) + 2e– → Cd(s) E ̊red = –0.403V
a) –2.11 V; nonspontaneous
b) 2.11 V; spontaneous
c) 1.26 V; spontaneous
d) –1.26 V; nonspontaneous
e) 1.257 V; non‐spontaneous
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