A piece of metal weighting 200 g is to be electroplated with 5% of its weight in gold. If the strength of the available current is 2 ampere, how long would it take to deposit the required amount of gold? Given: Electrochemical equivalent of hydrogen = 0.1044 x 10-4 g C-1
At. wt. of gold = 197.1 and At. wt. of hydrogen = 1.0008.
We know that m = ZIt.
t = 2.03h
