a. i. An electrolytic cell contains a mixture of ions Cu, Ag" and Zn2+. In which order will the metals be plated out onto the cathode? 2 mks ii. Aluminium is one of the most abundant elements on earth. Aluminium is alloyed with metals such as zinc and manganese. With the aid of a diagram, explain the electrolytic process for the production of aluminium b. What is? i. Electrorefining ii. Electroplating 5 mks 2 mks 2 mks iii. Explain using a diagram how one would electroplate iron bar with silver metal. 3 mks