Question

When a sample of copper containing iron as
impurity is purified by electrolysis, the
appropriate electrodes are:
Cathode
Anode
(1) Pure iron
(2) Impure sample
(3) Impure iron Impure sample
(4) Pure copper Impure sample
Pure copper
Pure copper​

Answer 1

Answer:

Impure sample is made of the anode and pure copper acts as the cathode.

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Answer 2

Answer:

Impure sample is anode

pure copper is cathode

Explanation:

As cu will release in anode and goes towards the cathode through copper sulphate and get deposited. Hence a pure rod of copper is formed at cathode.