Question

In the purification of impure copper using electrolysis, which of the following is correct?

• A. Both cathode and anode contains impure copper strip
• B. Anode contains impure copper and cathode contains pure copper strip
• C. Cathode contains impure copper and anode contains pure copper strip
• D. Both cathode and anode contains pure copper strips

Answer 1

The correct option is B Anode contains impure copper and cathode contains pure copper strip

Purification of Metals
Electrolytic cell can be used to transform impure ore to pure metal by taking impure metal at anode and pure metal at cathode.
Purification of impure copper:
Obtained by dipping two $Cu$ strips in a solution of $Cusalt\left(CuSO4\right)$



Anode:
$\text{The impure}Cu(\text{containing}Zn,Fe,Ag,andAu\text{as impurities})$
Cathode :
$\text{Thin strip of pure}Cu$