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Which of the following is an electrolyte used during the electrolytic refining of copper?

Which of the following is an electrolyte used during the electrolytic refining of copper? Correct Answer Copper sulphate solution acidified with sulphuric acid

In the electrolytic refining of copper, crude copper or blister copper is made the anode, a thin sheet of pure copper is made the cathode and a solution of copper sulphate acidified by sulphuric acid is used as the electrolyte.

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