Question #f364e

1 Answer
MeneerNask
Mar 1, 2017

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.

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