An electrolytic cell uses electrical energy to produce chemical change. Electrolysis involves forcing a current through a cell to produce a chemical change for which the cell potential is negative (means that electrical work causes an otherwise nonspontaneous chemical reaction to occur). Electrolysis involves stoichiometry regarding how much chemical change occurs with the flow of a given current for a specified time. Plating means depositing the neutral metal on the electrode by reducing the metal ions in solution.
Electrolysis's common uses are to place a thin coating of metal onto steel and to produce pure metals such as aluminum and copper.
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