In electrorefining of metals,the anode and ca | vedclass

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(B) Electrorefining is a process used for the purification of metals like $Cu$,$Zn$,$Ag$,$Ni$,etc. In this process,the impure metal is made the anode

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Sodium

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(B) Electrorefining is a process used for the purification of metals like $Cu$,$Zn$,$Ag$,$Ni$,etc. In this process,the impure metal is made the anode and a thin strip of pure metal is made the cathode. Highly reactive metals like $Na$,$K$,$Ca$,and $Mg$ cannot be refined by this method because they are obtained by the electrolysis of their fused salts,not aqueous solutions,as they react vigorously with water. Therefore,$Sodium$ cannot be refined using this method.

In electrorefining of metals,the anode and cathode are taken as a thick slab of impure metal and a strip of pure metal,respectively,while the electrolyte is a solution of a complex metal salt. This method cannot be applied for the refining of:

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