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Question

In the electrolytic refining of zinc,


A
graphite is at the anode.
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B
the impure metal is at the cathode.
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C
the metal ions get reduced at the anode.
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D
acidified zinc sulphate is the electrolyte.
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Solution

The correct option is D acidified zinc sulphate is the electrolyte.

In the electrolytic refining of zinc:

Anode: Impure zinc

Cathode: Strip of pure zinc

Electrolyte: Acidified zinc sulphate solution


At the anode, oxidation of metal occurs.

$$Zn \longrightarrow Zn^{2+} + 2e^–$$

At the cathode, reduction of metal ions takes place.

$$Zn^{2+} + 2e^– \longrightarrow Zn$$


Chemistry

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