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KCET2010ChemistryGeneral Principles and Processes of Isolation of Metals

In the electrolytic refining of zinc

Options

  1. Agraphite is at the anode
  2. Bthe impure metal is at the cathode
  3. Cthe metal ion get reduced at the anode
  4. 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⁺+2 e ⁻ pure Zn At anode impure Zn Zn ²⁺+2 e ⁻

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