Two separate electrolysis experiments are carried out using aqueous copper(II) sulfate, CuSO4(aq)\text{CuSO}_4(\text{aq})CuSO4(aq), as the electrolyte.
Which option correctly describes both the change in mass of the anode and the change in concentration of Cu2+(aq)\text{Cu}^{2+}(\text{aq})Cu2+(aq) ions in each experiment?
Experiment X: Anode mass stays the same; [Cu2+][\text{Cu}^{2+}][Cu2+] decreases.
Experiment Y: Anode mass decreases; [Cu2+][\text{Cu}^{2+}][Cu2+] stays the same.
Experiment X: Anode mass decreases; [Cu2+][\text{Cu}^{2+}][Cu2+] decreases.
Experiment Y: Anode mass decreases; [Cu2+][\text{Cu}^{2+}][Cu2+] decreases.
Experiment X: Anode mass stays the same; [Cu2+][\text{Cu}^{2+}][Cu2+] stays the same.
Experiment Y: Anode mass decreases; [Cu2+][\text{Cu}^{2+}][Cu2+] decreases.
Experiment X: Anode mass decreases; [Cu2+][\text{Cu}^{2+}][Cu2+] stays the same.
Experiment Y: Anode mass stays the same; [Cu2+][\text{Cu}^{2+}][Cu2+] stays the same.