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Electrolytic refining of copper with a diagram |
| Answer» In electrolytic process, the impure metal is made the anode (negatively charged electrode)\xa0and a thin strip of pure metal is made the cathode (positively charged electrode). A solution of the metal salt is used as an electrolyte. On passing the current through the electrolyte, the pure metal from the anode goes into the electrolyte solution and takes up electron and gets reduced to metal and deposited at cathode.At cathode Cu2+ +2e-\xa0\xa0{tex}\\rightarrow{/tex}\xa0Cu (deposited)At anode\xa0{tex}\\underset{(Impure\\;metal)}{Cu\\;(s)}{/tex}{tex}\\rightarrow{/tex}\xa0{tex}\\underset{(Dissolved)}{Cu^{2+}\\;(aq)+2e-}{/tex} | |