Question

What amount of electricity can deposit 1 mole of \(\mathrm{Al}\) metal at cathode when passed through molten \(\mathrm{AICl}_{3}\) ?
(A) \(0.3 \mathrm{~F}\)
(B) \(1 \mathrm{~F}\)
(C) \(3 \mathrm{~F}\)
(D) \(1 / 3 \mathrm{~F}\)

Answer 1

Ans: (C)
: \(\mathrm{Al}^{+3}+3 \mathrm{e}^{-} \rightarrow \mathrm{Al}\)
\(3 \mathrm{~F} \quad 1 \mathrm{~mol}\)