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Assertion (A) : Kohlrausch law states th...

Assertion (A) : Kohlrausch law states that limiting molar conductivity of an electrolyte can be represented as the difference of individual contributions of the anion and the cation.
Reason (R) : A cell in which an external source of voltage is used to bring about a chemical reaction is called electrolytic solution.

A

Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

B

Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A)

C

Assertion (A) is correct, but Reason (R) is incorrect statement.

D

Assertion (A) is incorrect, but Reason (R) is correct statement.

Text Solution

Verified by Experts

The correct Answer is:
D
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___________ Law of independent migration of ions states that limiting molar conductivity of an electrolyte can be represented as the sum of the individual contributions of the anion and cation of the electrolyte.

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(a) Apply Kohlrausch law of independent migration of ions, write the expression to determine the limiting molar conductivity of calcium chloride. (b) Given are the conductivity and molar conductivity of NaCI solutions at 298 K at different concentrations : Compare the variation of conductivity and molar conductivity of NaCI solutions on dilution. Give reason. (c) 0.1 M KCI solution offered a resistance of 100 ohms in conductivity cell at 298 K. If the cell constant of the cell is 1.29 cm^(-1) , calculate the molar conductivity of KCI solution.