When the sample of copper with the zinc impurity is to be purified by electrolysis, the appropriate electrodes are

Options

A. `{:("Cathode","Anode"),("Pure Copper","Pure Zinc"):}`
B. `{:("Cathode","Anode"),("Pure Zinc","Pure Copper"):}`
C. `{:("Cathode","Anode"),("Pure Copper","Impure Copper"):}`
D. `{:("Cathode","Anode"),("Pure Zinc","Impure Zinc"):}`

Answer

C