Question

Give any four points to explain the difference between electrolytic refining and electrolytic reduction

Answer 1

In electrolytic reduction graphite electrodes are used which are of same size. In electrolytic refining the anode is made of the impure metal which is to be purified and the cathode is made from that pure metal. initially the cathode is thick and the anode is very thin. 
 
   The electrolyte used in electrolytic refining is the metal sulphate with acid (acid id added to increase the conductivity) which is aqueous in nature. In electrolytic reduction molten chloride form of the solution is used.
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Answer 2

Hey...
In electrolytic reduction graphite electrodes are used which are of same size. in electrolytic refining the anode is made of the impure metal which is to be purified and the cathode is made from that pure metal. initially the cathode is thick and the anode is very thin.
The electrolyte used in electrolytic refining is the metal sulphate with acid (acid id added to increase the conductivity) which is aqueous in nature. whereas in electrolytic reduction molten chloride form of the solution is used.
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@ Saadya