Question

In electrolytic refining, impure metal is made ______ while pure metal acts as ______.

Answer 1

In electrolytic refining, impure metal is made anode while pure metal acts as cathode.

Explanation:

The impure metal is used as the anode, which dissolves into the electrolyte as ions, while pure metal ions from the solution get deposited on the cathode as solid pure metal. This transfers metal from the impure anode to the pure cathode, leaving impurities behind as anode mud. This process purifies the metal effectively by electrolysis.