Benedict Pfannerstill
Feb 14, 2025
Copper is electroplated from CuSO4 solution a constant current of 4 amp is applied by an external power of supply?
Copper is electroplated from a CuSO4 solution using a constant current of 4 amps applied by an external power supply. How long will it take to deposit 100 grams of copper? The atomic mass of copper is 63.546 g/mol.
1 Answers
The reduction half-reaction is Cu2+(aq) + 2 e- --> Cu(s)
1.00X10^-2 g Cu / 63.546 g/mol = 1.57 mol Cu X 2 mol e- / molCu = 3.15 mol electrons
3.15 mol e- X 96485 C/mole- = 3.04X10^5 C
Coulombs = ampere X seconds
3.04X10^5 C = 4 amp X seconds
seconds = 7.59X10^4 seconds
Time = 7.59X10^4 s / 60 = 1265 minutes/60 = 21.1 hours
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