Question

In the electrolytic refining of zinc,

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

Answer 1

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.

$Zn⟶Z{n}^{2+}+2e^{–}$

At the cathode, reduction of metal ions takes place.

$Z{n}^{2+}+2e^{–}⟶Zn$