Question #f364e

1 Answer
Mar 1, 2017

Answer:

Not really, unless there are extremes.

Explanation:

The plating is only dependant on the number of copper ions that lose their charge by gaining electrons from the cathode:
#Cu^(2+) (aq)+ 2e^(-) ->Cu (s)#

And the number of electrons is only dependant on current and time.

But :
If current is very low (or zero), and #Cu^(2+)# concentration is high, some zinc from the brass alloy may exchange charge with the copper ions: #Cu^(2+) + Zn ->Cu + Zn^(2+)#

And if the concentration of #Cu^(2+)# is very low and the current is high, hydrogen may form at the cathode, which will lower the copper gain.