ક્રમ પ્રક્મ માટે $\Delta G^o$ શોધો
.... .............$\mathrm{kJ} \mathrm{mol}^{-1}$
$2H^+ + 2e^- + \frac{1}{2}O_2\longrightarrow H_2O_{(l)} ; $
$E^o = +1.23\, V$
$Fe^{2+} + 2e^- \longrightarrow Fe_{(s)} ;\ E^o = -0.44\,V$
$(i)$ $Zn| Zn^{2+} {(1\,M)}|| Cu^{2+}{(0.1\,M)}| Cu$
$(ii)$ $Zn| Zn^{2+} {(1\,M)}|| Cu^{2+}(1\,M) |Cu $
$(iii)$ $Zn| Zn^{2+} {(0.1\,M)}|| Cu^{2+}{(1\,M)}| Cu$