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Chemistry Question on General Principles and Processes of Isolation of Elements

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

acidified zinc sulphate.is the electrolyte

Explanation

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

Zn2++2e−⟶Zn pure Zn ^{2+}+2 e^{-} \longrightarrow \underset{\text { pure }}{ Zn }

At anode

Znimpure⟶Zn2++2e−\underset{\text{impure}}{Zn} \longrightarrow Zn ^{2+}+2 e^{-}