In order to electroplate a metal key with a copper what should be connected as the cathode in the electrolytic cell?

Answer 1

In an electrolytic cell used for electroplating a metal key with copper, the metal key itself should be connected as the cathode. The cathode is the electrode where reduction occurs, and in this case, it will gain copper ions from the electrolyte solution and become coated with copper as the electroplating process takes place.

In summary, for electroplating a metal key with copper, the key acts as the cathode in the electrolytic cell.