3.30 Products of electrolysis of copper sulfate

Question 1

To set up

Answer 1

Impure copper anode (to purify)
Pure copper cathode
Copper sulfate solution

Question 2

Experiment

Answer 2

Copper ions from the anode move to the cathode where they gain electrons and leave as pure copper

Impurities form as sludge below the anode

The cathode gains mass since it gains pure copper, and the anode will lose mass as copper ions are lost (they replace the ones from the solution that go to the cathode) and are impurities