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-----Relationship between the current and the amount of purified copper produced
Hi, does anyone have any information about the relationship between the current and the amount of purified copper produced on the cathode. If anyone could help me on this topic I would be most grateful. I am currently in year 11 which is GCSE level.
Yours sincerly,
PGS - Portsmouth, England
2005
Faraday's Law of Electrolysis tells all, Becky.
Ted Mooney, P.E.
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2005
First of two simultaneous responses --
Try checking Faraday's Laws of electrolysis. He reckoned that one gram-equivalent of any metal is deposited by 96,485 Coulombs (give or take a few), but only if it can be assumed the efficiency is 100%. Most metals are not 100% efficient at being deposited, but copper is pretty close to it. The most important laws in electrochemistry and electroplating are Faradays Laws and Ohms Law - everything else is derived from these gems of enlightenment, so you must understand them if you are to understand the subject.
Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
2005
Second of two simultaneous responses --
But it only works if you keep the voltage below the hydrogen and/or oxygen overvoltage potential. Depending on the solution, you start to use electricity to evolve the gas/gasses as well as plate out.
Note that the plated out amount of silver is a definition of current.
- Navarre, Florida
2005
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