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In the extraction of zinc from zinc blen...

In the extraction of zinc from zinc blende:
Give an equation to show how zinc oxide is converted to zinc.

Text Solution

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Electro refining of zinc :
Electrolyte used : `ZnSO_4 " solution containing a little " H_2SO_4`
Anode : Block of impure zinc
Cathode : Thin sheet of pure zinc.
On passing current pure zinc is obtained at cathode.
Anode reaction :`{:(Zn -2e^(-) to Zn_(aq)^(2+)),("impure"):}`
Cathode reaction : `{:(Zn_(aq)^(2+)2e^(-) to Zn),(("pure metal")):}`
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