(a(i))[2]
Describe the observations at each electrode during the electrolysis.
(a(ii))[2]
Give a test and observation that identify the product formed at the anode.
(a(iii))[2]
Describe the change in colour of the solution during electrolysis. Explain your answer.
(b(i))[1]
Describe the colour change of the solution during this electrolysis.
(b(ii))[3]
State how the mass of each electrode changes during this electrolysis. Explain your answer.
(b(iii))[1]
Suggest one practical use of the electrolysis of aqueous copper(II) sulfate.