Question

If electrolysis of aqueous CuSO4 solution is carried out using Cu-electrodes, the reaction taking place at the anode is:
A. Cu(s) - 2e → Cu2+(aq)
B. Cu2+(aq) + 2e → Cu(s)
C. H+ + e → H
D. SO4 2- (aq) -2e → SO4 D