Assertion -The A- for all electrolytes can be obtained by extrapolation of -a curve vs- -concentration to zero concentration- Reason- A- for all electrolytes can be obtained by Kohlrausch law-

The correct option is D Assertion is incorrect but Reason is correctThe A^∞ for strong electrolytes can be obtained by extrapolation of λ_a curve v ...

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Standard XII

Chemistry

Electrochemical Cells, Galvanic Cells

Assertion :Th...

Question

Assertion :The $A^{\infty}$ for all electrolytes can be obtained by extrapolation of $λ_{a}$ curve vs. $\sqrt{c o n c e n t r a t i o n}$ to zero concentration. Reason: $A^{\infty}$ for all electrolytes can be obtained by Kohlrausch law.

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 D Assertion is incorrect but Reason is correct
The $A^{\infty}$ for strong electrolytes can be obtained by extrapolation of $λ_{a}$ curve vs. $\sqrt{c o n c e n t r a t i o n}$ to zero concentration.
This method is not suitable for weak electrolytes.

$A^{\infty}$ for all electrolytes can be obtained by Kohlrausch law of the independent migration of ions.

Thus, the assertion is incorrect but Reason is correct.

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Assertion :The A∞ for all electrolytes can be obtained by extrapolation of λa curve vs. √concentration to zero concentration. Reason: A∞ for all electrolytes can be obtained by Kohlrausch law.

Assertion :The $A^{\infty}$ for all electrolytes can be obtained by extrapolation of $λ_{a}$ curve vs. $\sqrt{c o n c e n t r a t i o n}$ to zero concentration. Reason: $A^{\infty}$ for all electrolytes can be obtained by Kohlrausch law.