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Assertion:In electrolysis of aqueous NaC...

Assertion:In electrolysis of aqueous NaCl the product obtained is `H_2` gas.
Reason:Gases are liberted faster than the metals.

A

If both assertion and reason are true and reason is the correct explanation of assertion .

B

If both assertion and reason are true but reason is not the correct explanation of assertion .

C

If assertion is true but reason is false .

D

If both assertion and reason are false .

Text Solution

Verified by Experts

The correct Answer is:
C
At cathode there is competition between the following reduction reactions :
`Na_((aq))^(+)+e^(-) to Na_((s)) , E_("cell")^@=-2.71 V`
`H_((aq))^(+) + e^(-) to 1/2H_(2(g)) , E_"cell"^@`=0.00 V
Hence, reaction with higher `E^@` value is preferred and `H_2` is liberated.
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