NTA Abhyas JEE Main2020Chemistryd and f Block ElementsPractice
In the electrolytic refining of zinc
Options
- AGraphite is at the anode.
- BThe impure metal is at the cathode.
- CThe metal ion get reduced at the anode.
- DAcidified zinc sulphate is the electrolyte.
Correct answer
D. Acidified zinc sulphate is the electrolyte.
Step-by-step solution
In the electrolytic refining of zinc, anode is made up of impure zinc while a strip of pure zinc acts as cathode. An acidified solution of zinc sulphate acts as electrolyte. When electricity is passed, following reactions occur. At cathode Zn 2+ +2e − → Zn (pure) At anode Zn (impure) → Zn 2+ + 2e −