Chemistry - Electrochemistry Question with Solution | TestHub

The metals whose reduction potentials are greater than the reduction potential of Hydrogen do not liberate${\mathrm{H}}_2$gas.
${\text{H}}^{\text{+}}+{\text{e}}^{-}\to \frac{1}{2}{\text{H}}_{\text{2}}{\text{;E}}^{\text{ο}}=0.00\text{ V}$
${\text{Au}}^{3+}+3{\text{e}}^{–}\to {\text{ Au E}}^{\text{o}}=+1.50\text{V }$
${\text{Ag}}^{+}+{\text{ e}}^{–}\to {\text{Ag E}}^{\text{o}}=+0.799\text{ V}$
${\text{Cu}}^{2+}+2{\text{e}}^{–}\to {\text{Cu E}}^{\text{o}}=+0.34\text{V}$