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 .

Assertion:In electrolysis of aqueous NaCl the product obtained is `H_2

1.	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 .
Answer» Correct Answer - 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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