Chemistry - Electrochemistry Question with Solution | TestHub

The number of electrons involved in the reaction are three as shown below $${\mathrm{Al}}^{3+}+3e^{-}⟶\mathrm{Al}$$ It means the conversion of every aluminium ion to aluminium atom requires three electrons. Therefore, the amount of electricity required for one mole of ${\mathrm{Al}}^{3+}$ ions $=3\mathrm{F}$.