Chemistry - Electrochemistry Question with Solution | TestHub

Given ${\mathrm{E}}_{{\mathrm{Ag}}^{+}\mid \mathrm{Ag}}^{\mathrm{o}}=+0.80\mathrm{V}{\mathrm{E}}_{{\mathrm{Co}}^{2+}\mid \mathrm{Co}}^{\mathrm{o}}=-0.28\mathrm{V},{\mathrm{E}}_{{\mathrm{Cu}}^{2+}\mid \mathrm{Cu}}^{\mathrm{o}}=+0.34\mathrm{V},{\mathrm{E}}_{{\mathrm{Zn}}^{2+}\mid \mathrm{Zn}}^{\mathrm{o}}=-0.76\mathrm{V}$. Which metal will corrode fastest?