25. How does electrolytical refining differ from electrolytical reduction ??

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Q. Differentiate between electrolytic refining and electrolytic reduction

Distinguish between electrolytic methods of reduction and refining.

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Q. In the electrolytic refining of Copper (electrolyte is

C u S O_{4}

solution + dil

H_{2} S O_{4}

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Question 62
(i) Given below are the steps for extraction of copper from its ore. Write the reaction involved.
(a) Roasting of copper (I) sulphide.
(b) Reduction of copper (I) oxide with copper (I) sulphide.
(c) Electrolytic refining.

(ii) Draw a neat and well-labelled diagram for electrolytic refining of copper.

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