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Question

For the electrolysis of molten NaCl using inert platinum electrodes, choose the correct option(s).

A
Reaction at anode :
Na+(l)+eNa(s)
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B
Reaction at cathode :
Na+(l)+eNa(s)
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C
Chlorine gas is produced at anode
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D
Chlorine gas is producedat cathode
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Solution

The correct option is C Chlorine gas is produced at anode
Electrolysis of molten NaCl with Pt electrode:
In molten NaCl , the ions Na+ and Cl are rpesent in molten form
Reaction at anode :
2Cl(l)Cl2(g)+2e
So, chlorine gas is given at anode.

Reaction at cathode :
Na+(l)+eNa(s)
At cathode, sodium metal is there.

Net reaction:
2Na+(l)+2Cl(l)2Na(s)+Cl2(g)2NaCl(l)2Na(s)+Cl2(g)

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