question_answer

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

Answer:

                                             In aqueous solution, H^ ions will be also formed along with \[A{{l}^{3+}}\] ions.\[{{H}^{+}}\]ions will be released in preference it\[A{{l}^{3+}}\] ions at the cathode since their discharge potential is less. This means that \[A{{l}^{3+}}\] ions will remain in solution.