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(D) In the electrolytic refining of copper,the impure metal is made the anode and a strip of pure metal is made the cathode.Therefore,for a copper sam

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Cathode - Pure $Cu$,Anode - Impure $Cu$ sample

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(D) In the electrolytic refining of copper,the impure metal is made the anode and a strip of pure metal is made the cathode.Therefore,for a copper sample containing zinc as an impurity,the impure copper sample acts as the anode,and a strip of pure copper acts as the cathode.During electrolysis,copper dissolves from the anode into the electrolyte,and pure copper deposits on the cathode.

Identify the appropriate electrodes for the electrolytic refining of a copper sample containing zinc as an impurity.

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