Suppose you need to produce 25.0 g of pure copper by electrolysis of a solution of
CuSO4(aq), by the reduction, Cu2+(aq) + 2 e- → Cu(s). How much time will it take with a
current of 3.00 A? Coulombs = Amps x seconds. Faraday’s constant is 9.65 x 104 C/(mol e-) and
the molecular weight of Cu is 63.5 g/mol.