How is copper refined by electrolysis?
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The anode (positive electrode ) is made from impure copper and the cathode (negative electrode) is made from pure copper. During electrolysis, the anode loses mass as copper dissolves, and the cathode gains mass as copper is deposited. A half-equation shows what happens at one of the electrodes during electrolysis.
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Copper is refined by electrolysis. Electricity is passed through solutions containing copper compounds, such as copper sulphate. The anode (positive electrode) is made from impure copper and the cathode (negative electrode) is made from refined copper.
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