An aqueous solution of copper (II) Sulfate, CuSO4

Question

An aqueous solution of copper (II) Sulfate, CuSO4, is electrolyzed for 45 minutes. A 3.2 ampere current is used. What mass of copper is produced? (atomic weight: Cu = 63.546)

Answer 1

The reaction is

Cu2+ + 2e-  ==>  Cu

Note that an ampere is a Coulomb / s.

45 min x (60 s / min) x (3.2 C / s) x (1 mole e- / 96,500 C) x (1 mole Cu / 2 moles e-) x (63.5 g Cu / 1 mole Cu) = 2.84 g Cu