During Refining Of Copper Pure Copper Deposit On Which Electrode

2019817in refining copper, an aqueous solution of copperii sulphate is electrolyzed, using impure copper as the anode and pure copper as the cathodet the anode, metal impurities higher than copper in the electrochemical series such as zinc, iron and lead are oxidized first, then copper loses its electrons to form copperii ions.