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Topic: Copper Electroplating  (Read 4661 times)

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Offline Ely

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Copper Electroplating
« on: February 01, 2007, 05:03:25 PM »
Anyone can provide me explanation of the copper electroplating??
I want to know what happens during the process.
What is the purpose of using HCl and copper sulfate solutions??
I am hoping for answers.
Thank you very much.

Ely Rosales
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Offline Donaldson Tan

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Re: Copper Electroplating
« Reply #1 on: February 02, 2007, 08:29:11 AM »
HCl is used to control the thickness of the Copper layer deposited by electroplating. HCl changes the driving force of the copper electroplating process by adjusting the concentration of copper(II) cation via an equilibrium reaction:

Cu2+ (aq) + 4Cl- (aq) <-> CuCl42- (aq)
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