In electrolytic refining method_____ metal act as anode.

Assertion : In electrolytic refining of metal, impure metal is made cathode while a strip of pure metal is used as anode. Reason : The pure metal gets deposited at anode as anode mud.

In electrolytic refining of metals, the impure metal is made, the anode and a strip of pure metal,the cathode during the,electrolysis of an aqueons solution of a complex metal salt. This method cannot be used for refining of : silver, copper, aluminium, zinc

During electrolytic refining of copper, some metals present as inpurity settle as 'anode mud'. These are -

Name the common elements present in the anode mud in electrolytic refining of copper.Why are they so present?

a) Write the equation of the chemical reaction taking place at anode and cathode electrolytic refining of aluminium. b) Carbon monoxide cannot be used as reducing agent to extract aluminium from alumina. Why? c) Anode replaced from time to time while producing aluminium. Why?

Assertion: Elements present in anode mud of an electrolytic refining process has higher oxidation potential as compared to that of metal to be refined. Reason: Impurities having higher oxidation potential as compared to metal to be refined get reduced during electro refining.

It is said that electrolytic refining of copper is economic. Why?

In zone refining method, the molten zone.