Given E°(Zn²⁺/Zn) = −0.76 V and E°(Ag⁺/Ag) = +0.80 V, what is the standard emf of a zinc-silver cell?
Correct answer D. 1.56 V
Explanation
E°cell = E°(cathode) − E°(anode) = 0.80 − (−0.76) = 1.56 V, with zinc as the anode and silver as the cathode.
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