What mass of Co?

Question

What mass of Co can be produced from aqueous Co+2 in 1.0 hr with a current of 15 A?

Answer 1

1.0 hr x 60 min/hr x 60 sec/min = 3600 sec

15 A = 15 C/sec

15 C/sec x 3600 sec = 54,000 C

54,000 C x 1 mole e^- /96485C = 0.5597 moles electrons

0.5597 mol electrons x 1 mol Co/2 mol e- x 58.9 g/mol = 16.5 g =

17 g of cobalt