Question

explain the process of refining of metals

Answer 1

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REFINING OF METALS :

• The process of converting impure metal into pure metal is called refining of metals. Many metals such as copper , zinc , tin , nickel , silver , gold are refined by electrolytic refining.

• Impure metals acts as anode , pure metal as cathode. Soluble salt of metal as electrolyte. When current is passed impure metal changes into metal ions which gain electrons at cathode and change into pure metal. Impurities are left as anode mud.

→ Arrange the set up as shown in the figure :

Anode ------- impure metal ----------- Cu.

Cathode ------ Pure metal------------ Cu.

Electrolyte------- Acidified copper sulphate

Allow the electric current to pass through it.

• The impurities get collected at the anode called anode mud. The pure metal is collected at the cathode.

( Refer from the below attachment please..)

That's it...!!!

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