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Byju's Answer
Standard XII
Chemistry
Equivalent, Molar Conductivity and Cell Constant
Assertion :Mo...
Question

Assertion :Molar conductivity of a weak electrolyte at infinite dilution cannot be determined experimentally. Reason: Kohlrausch's law helps to find the molar conductivity of a weak electrolyte at infinite dilution.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Explanation of Assertion:-
→ Molar conductivity at infinite dilution of a strong electrolyte can be determined by extrapolation as linear graph is obtained.
→ For weak electrolyte molar conductivity at infinite dilution cannot be determined experimentally and by extrapolation because graph is not linear, maximum value of molar conductivity at infinite dilution cannot be obtained.

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Q. Assertion :Kohlrausch law helps to find the molar conductivity of weak electrolyte at infinite dilution. Reason: Molar conductivity of a weak electrolyte at infinite dilution cannot be determined experimentally.
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Equivalent, Molar Conductivity and Cell Constant
Standard XII Chemistry
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