Question

In the electrolytic refining of copper , the electrolyte is a solution of acidified copper sulphate.
There are an anode and cathode. Refinning is carried out by passing an electric current.
i. Pure anode is
(a) Pure stripe (b) Impure copper (c) Refined copper (d) None of these
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Answer 1

Answer: (c) Refined copper

Explanation: Principle of method of Electrolytic refining-

Electrolytic refining is the process of refining impure metals by using electricity. In this process impure metal is made as the anode and a strip of pure metal is made the cathode. A solution of a soluble salt of the same metal is taken as the electrolyte.

Example- Copper can be purified by this way.

In electrolytic refining of copper, the electrolyte is a solution of acidified copper sulphate. The anode is impure copper, whereas the cathode is a strip of pure copper on passing electric current, pure copper is deposited on the cathode.

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