Question

Which of the following is the correct set-up for

electrolytic refining of silver?

A Cathode : pure copper; anode : impure silver; electrolyte : Cu(NO3)2(aq)

B Cathode: impure silver; anode : pure silver; electrolyte : AgNO3(aq)

C Cathode: pure silver; anode : impure silver; electrolyte : AgNO3(aq)

D Cathode: pure copper; anode : impure silver; electrolyte : AgNO3(aq)

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