Question

The values of standard oxidation potentials of following reactions are given below :
(i) $Zn \longrightarrow Zn^{2+} + 2e^-$; E° = 0.762 V
(ii) $Fe \longrightarrow Fe^{2+} + 2e^-$; E° = 0.440 V
(iii) $Cu \longrightarrow Cu^{2+} + 2e^-$; E° = -0.345 V
(iv) $Ag \longrightarrow Ag^{+} + e^-$; E° = -0.800 V
Which of the following is most easily reduced
(a) Fe
(b) Ag
(c) Zn
(d) Cu

Answer 1

Ag Becaz in this eqn Ag convert ho rha hai Ag+ main mtlb iska reduction potential +ve main max hoga means yeh good oxidising agent hai aur yeh easily and khudka reduction kar lega bakio ke compared main