Question

Metal plating is done by passing current through a metal solution. For example, an item can become gold plated by attaching the item to a power source and submerging it into a Au3+Au3+ solution. The item itself serves as the cathode, at which the Au3+Au3+ions are reduced to Au(s)Au(s). A piece of solid gold is used as the anode and is also connected to the power source, thus completing the circuit.

What mass of gold is produced when 16.2 A of current are passed through a gold solution for 39.0 min ?

Answer 1

Atomic weight of "Au' text mass=- - valency x 96500 mass= ? Atomic weight of an a 197 olmal Cicurrent = 16.2 A time = 39 min = 39x60 sec = 2340 sec valency=3 Cauts). 19 7 x 16.2 X 2340 ma - 3Xq6500 m=25.79577 gr