Question

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Refining of copper from electrolysis method

Answer 1

Many metals such as copper zinc etc..are refined using electrolytically.In this method impure metal is made the anode and pure metal is made at cathode.A solution of the metal salt is used as an electrolyte.On passing the current through the electrolyte,the pure metal from the anode dissolves into the electrolyte.An equivalent amount of pure metal from the electrolyte is deposited at the cathode.The soluble impurities go into the solution , whereas the insoluble impurities settle down at the bottom of the anode and are known as anode mud.

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