Chemistry - Electrochemistry Question with Solution | TestHub

$\stackrel{+7}{{\mathrm{MnO}}_4^{-}}⟶{\mathrm{Mn}}^{2+}$ The reaction can be written as : ${\mathrm{MnO}}_4^{-}+5e^{-}⟶{\mathrm{Mn}}^{2+}$ Hence, 5 moles of electrons or $5\mathrm{F}$ of electricity are required for the given reaction.