Electrolysis for coin cleaning

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Offline solesasa

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Electrolysis for coin cleaning
« on: 06/03/2015 14:30:04 »
I am looking for help to find the chemical reactions at the anode and the cathode for electrolysis of a coin as one electrode and a graphite rod as the second electrode.  The reaction would be taking place in a nacl solution. Specifically we are interested in how the metal components of the coins react, as well as the reactions involving the h2o and nacl.  Case 1 for a penny 95% copper, 5% zinc,  and case 2 quarter 91.7 % copper and 8.3 % nickel.  Thanks for any help!!!