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Electrolytic Refining |
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Answer» - The process of purifying impure metal to obtain PURE metal on the passage of electric current is called electrolytic refining.Metals like copper, zinc, nickel, silver, tin, gold etc., are refined electrolytically.Anode – impure or crude metalCathode – a thin strip of pure metalElectrolyte – aqueous SOLUTION of a metal saltFrom anode (oxidation) – metal IONS are released into the solutionAt cathode (REDUCTION) – equivalent amount of metal from solution is depositedImpurities deposit at the bottom of the anode. |
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