24. The standard potential for the following reaction: \(Zn + 2Ag^+ \rightarrow Zn^{2+} + 2Ag\) is 1.56 V. Calculate the cell potential for the following reaction: \(2Zn^{2+} + 4Ag \rightarrow 2Zn + 4Ag^+\)
(A)1.56 V
(B)-1.56 V
(C)3.12 V
(D)-3.12 V
(E)none of these

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