Evaluate time to cause the deposition:
Problem:
How many minutes will it take for a current of 0.50 amps. For cause the deposition of 0.50 g of silver from a solution on the base of 80.0% current efficiency.
Answer:
m = Mr / n × It / 96500
The current applied is 0.50 amps. But current efficiency is 80%
Hence, I = 0.5 × 80/100 = 0.4
0.5 = l07.9/1 × 0.4t/96500
t = 96500 × 0.5/l07.9 × 0.4 = lll7.9 sec = l8.6 mins
Time required to deposit 0.5 g of silver = l8.6 mins.