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Coarse copper (containing 99% copper) was prefabricated into thick plate as anode, pure copper as thin sheet as cathode, and a mixture of sulfuric acid (H2SO4) and copper sulfate (CuSO4) was used as electrolyte. After the current is energized, copper dissolves into copper ions (Cu) from the anode and moves to the cathode, where electrons are obtained and pure copper (also known as electrolytic copper) is precipitated.







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