Essential Chemistry for IGCSE - Electricity And Chemistry (Section 7 - No. 35)
In the electrolytic refining of copper, what happens to the copper ions (Cu²⁺) in the electrolyte?
They are oxidized at the anode.
They remain in the solution.
They are reduced at the cathode.
They form a precipitate.
Explanation
The copper ions (Cu²⁺) gain electrons (reduction) at the cathode.
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