The electrolytic cell converts electrical energy in to chemical energy, thus the electrodes must be conductive. ... The potential difference is controlled in the plating process; a low amount of constant voltage is preferable as it provides enough efficiency of metal deposition however, does not distribute enough energy to cause a large sub-reaction with the water molecules of the electrolyte solution. ... For example, if there was not a metallic ion close to the cathode and the electrons had built up due to constant current; the electrons would bond to the water molecules and produce hydrogen...

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• Approx Pages: 20
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• Grade Level: High School