Why cannot aluminium metal be produced by the electrolysis of aqueous solution of aluminium salt ?

Explanation

In aqueous solution, `H^(+)` ions will be also formed along formed along with `Al^(3+)` ions. `H^(+)` ions will be released in preference to `Al^(3+)` ionsat the cathode since their discharge potential is less. This means that `Al^(3+)` ions will remain in solution.