Essential Chemistry for IGCSE - Electricity And Chemistry (Section 5 - No. 14)
Which of the following represents the correct half-reaction at the anode during the electrolysis of copper sulfate solution using copper electrodes?
Cu2+ + 2e- → Cu
Cu → Cu2+ + 2e-
2H+ + 2e- → H2
SO42- → SO3 + O2 + 2e-
Explanation
At the copper anode, the copper metal is oxidized to form copper(II) ions.
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