Question

In the electrolytic refining of Zinc ,.................

• A. the impure metal is at the cathode
• B. graphite is at the anode
• C. acidified zinc sulphate.is the electrolyte
• D. the metal ion gets reduced at the anode

Answer 1

Answer: (C)

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

$Z{n}^{2+}+2e^{-}⟶\underset{\text{ pure }}{\mathrm{Zn}}$

At anode

$\underset{\text{impure}}{\mathrm{Zn}}⟶Z{n}^{2+}+2e^{-}$