Question

State one relevant observation:

At the anode when aqueous copper sulfate solution is electrolyzed using copper electrodes.

Answer 1

• At the anode when aqueous copper sulphate solution is electrolyzed using copper electrodes, then nothing is left at the anode as copper atoms form copper ions and migrate towards the cathode.
• The blue-coloured aqueous copper (II) sulphate solution remains unchanged during electrolysis when copper electrodes are used but it fades when platinum electrodes are used.