Assertion : $Λ_{e q (C H_{3} C O O H)}^{\circ}$ cannot be determined experimentally. Reason: $C H_{3} C O O H$ is a weak acid and Debye-Huckel Onsager equation cannot be used. Extrapolation method cannot be employed.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Equivalent conductance of weak electrolytes increases steadily with dilution and the graph drawn between $λ_{e q}$ and √c is not a straight line. The curve does not meet the equivalent conductance axis.
So, the value of $λ_{α}$ cannot be determine by extrapolation.
Hence equivalent conductance at infinite dilution can be determined indirectly by Kohlrausch’s law.

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Similar questions

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

Assertion (A) Ethanol is a weaker acid than phenol.
Reason (R) Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Assertion: All the points (1, 0), (-1, 0), (2, 0) and (5, 0) lie on the x – axis.
Reason: Equation of the x-axis is y = 0

Choose the correct option.

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Assertion :Λ∘eq(CH3COOH) cannot be determined experimentally. Reason: CH3COOH is a weak acid and Debye-Huckel Onsager equation cannot be used. Extrapolation method cannot be employed.

Assertion : $Λ_{e q (C H_{3} C O O H)}^{\circ}$ cannot be determined experimentally. Reason: $C H_{3} C O O H$ is a weak acid and Debye-Huckel Onsager equation cannot be used. Extrapolation method cannot be employed.