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The method used in extraction of more reactive metals is by Electrolysis.
For example Na from NaCl , fused NaCl is electrolysed with steel cathode (-) and Graphite anode(+).The metal (Na) will be deposited at the Cathode and Chlorine liberated at the anode.
At Cathode 2Na^+ + 2e^- gives 2Na
At Anode 2Cl^- gives Cl2 + 2e^-
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For example Na from NaCl , fused NaCl is electrolysed with steel cathode (-) and Graphite anode(+).The metal (Na) will be deposited at the Cathode and Chlorine liberated at the anode.
At Cathode 2Na^+ + 2e^- gives 2Na
At Anode 2Cl^- gives Cl2 + 2e^-
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the metals which are highly reactive can be refined by electrolytic refining
for ex - strip of pure and impure copper at cathode and anode resp. . copper deposits at anode and cu^2+ plus 2e at cathode
equation :- cu gives cu^2 plus2e
for ex - strip of pure and impure copper at cathode and anode resp. . copper deposits at anode and cu^2+ plus 2e at cathode
equation :- cu gives cu^2 plus2e
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