At 298 K, the standard electrode potentials of ${Cu^{2+}/Cu, Zn^{2+}/Zn, Fe^{2+}/Fe, and Ag^{+}/Ag}$ are 0.34 V, - 0.76 V, - 0.44 V and 0.80 V, respectively. On the basis of standard electrode potential, predict which of the following reaction cannot occur ?