Question

In electro refining of copper some gold is produced as ​

Answer 1

In electrolytic refining of copper some gold is deposited below anode. Impure copper usually contains Ag,Au,Ni,Zn,Fe,Pb,Sn etc, as impurity. Impure metal is taken as anode dipped in the acidified solution of copper sulphate.

Answer 2

Answer:

electrolytic refining of copper some gold is deposited below anode. Impure copper usually contains Ag,Au,Ni,Zn,Fe,Pb,Sn etc, as impurity. Impure metal is taken as anode dipped in the acidified solution of copper sulphate.

electrorefining step, impurities like Fe, Ni, Zn get dissolved in the solution while Au, Ag and Pt are deposited as anode mud below the anode.