Essential Chemistry for IGCSE - Electricity And Chemistry (Section 4 - No. 15)
What happens to the copper anode during electrolysis of copper sulfate solution with copper electrodes?
It dissolves
It becomes coated with copper
The mass of the anode decreases
The concentration of Cu2+ ions increases
Explanation
The copper atoms in the anode get oxidized, and dissolve into the solution as Cu2+ ions, making the anode dissolve.
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