Question
Chemistry Question on General Principles and Processes of Isolation of Elements
In electro-refining of metal the impure metal is made the anode and a strip of pure metal the cathode during the electrolysis of an aqueous solution of a complex metal salt. This method cannot be used for refining of
A
Silver
B
Copper
C
Aluminium
D
Gold
Answer
Aluminium
Explanation
Solution
Aluminium can not be electro-refined by using an aqueous solution of its salt