Q36 of 65 Page 18

Which one of the following figures correctly describes the process of electrolytic refining?

Figure (c) correctly describes the process of electrolytic refining.


In the process of electrolytic refining, impure metal (calcium) forms the positively charged anode whereas pure metal forms the negatively cathode. Copper sulphate (CuSO4) is taken as an electrolyte.


Figure (c) shows the process of electrolytic refining of copper metal. Copper from impure anode dissolves into the solution. Copper ions (Cu2+) from the solution are deposited on the cathode.

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