1.

When the sample of copper with zinc impurityn is to be purified by electrolysis, the appropriate electrode are .A. Cathode : Pure `Zn` Anode : Pure` Cu`B. Cthode : Impure sample Anode : Pure `Cu`C. Cathode : Impure `Zn` Anode : Impure sampleD. Cathode : Pure `Cu` Anode : Impure sample

Answer» Correct Answer - D
Anode : `Cu rarr Cu^(2+) + 2e^(Ө)` (impure)
Cathode : `Cu^(2+) + 2e^(Ө)` rarr Cu` (pure).


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