When the sample of copper wth zinc impurity is to be purified by electrolysis,
When the sample of copper wth zinc impurity is to be purified by electrolysis, the appropriate electrodes are
| cathode | anode |
| (a) pure zinc | pure copper
|
| (b) impure sample | pure copper |
| (c) impure zinc | impure sample |
| (d) pure copper | impure sample. |
4 views
1 Answers
(d) : The impure metal is made anode while a thin sheet of pure metal acts as cathode. On passing the current, the pure metal is deposited on the cathode and equivalent amount of the metal gets dissolved from the anode.
4 views
Answered