Magnesium is obtained by the electrolysis of magnesium chloride in a cell similar to the one shown below.
(i) What is the cathode made from? [1]
(ii) What is the anode made from? [1]
(iii) Why is the chlorine gas kept separate from the magnesium metal? [1]
(b) The magnesium chloride is made by the following reaction.
MgO + C+ Cl₂ - MgCl₂ + CO
Rewrite the equation in words. [2]
(c) Name two other metals that are obtained by electrolysis. [2]
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