Question

3. What is electro refining process? Which metals can be obtained by this process? Ĺ

Answer 1

In the process of electrolytic refining impure metal is made and node and thin plate of pure metal the cathode and metal salt solution metal to be refined is used as a electrolyte on passing current electrolysis take place and metal ions in the solution move towards the cathode accept electrons and deposit as pure metals and ions move towards a node react with the impure metal and passes into the solution as soluble metal salt. whereas the insoluble metals settle at the bottom of the anode and is called anode mud. The overall reaction is the disposition of metal on the cathode and dissolution of impure metal on the anode.

Low reactive metals can be obtained from this process such copper.