Question

Question #f364e

Answer 1

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.