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Electrolytic Refining

In electroref...

Question

In electrorefining of copper, impure copper is made anode.

A

True

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B

False

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Solution

The correct option is A
True

In electro-refining process, the impure metal is made the anode and a thin strip of pure metal is made the cathode. A solution of the metal salt is used as an electrolyte.

Upon passing electric current, the copper atoms migrate from the anode towards the cathode and get deposited there.

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Name the cathode and anode in the electrorefining of copper. [2 MARKS]

Q. During electrolytic refining of copper.
(a) Pure copper acts as anode.
(b) Pure copper acts as cathode.
(c) Impure copper acts as anode.
(d) Impure copper acts as cathode.

Q. In electrorefining, the impure metal is made.

Q. The anode used during purification of impure copper is__________.

C u

sheet / thick impure

C u

Assertion: When an electric current is passed through the copper sulphate electrolyte, the impure copper anode gradually dissolve and pure copper is deposited on the cathode.

Reason: Pure metals are deposited in electroplating techniques.

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