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  • Down's process is based on the electrolysis of NaCl in presence of ?Option: 1 MgCl2Optio

Down's process is based on the electrolysis of NaCl in presence of ?

Option: 1

MgCl2


Option: 2

LiCl


Option: 3

both a and b


Option: 4

CaCl2


Answers (1)

best_answer

As we learnt ,

 

Extraction of sodium -

By Down's process: Electrolysis of fused sodium chloride in the presence of CaCl{_{2}} and KF using graphite anode and iron cathode

- wherein

NaCl \rightleftharpoons Na^{+}+Cl^{-}

At cathode: Na^{+}+e^{-}\rightarrow Na

At Anode:

Cl^{-}\rightarrow Cl+e^{-}\\Cl+Cl\rightarrow Cl_{2}

 

 In down's process NaCl is electrolysed in presence of CaCl2

 

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