Question

Assertion :Statement-I : Molar conductivity of a weak electrolyte at infinite dilution cannot be determined experimentally. Reason: Statement-II : Kohlrausch law help to find the molar conductivity of a weak electrolyte at infinite dilution.

• A. Statement-I is true, Statement-II is true; Statement-II is correct explanation for Statement-I.
• B. Statement-I is true, Statement-II is true; Statement-II is NOT a correct explanation for statement-I
• C. Statement-I is true, Statement-II is false
• D. Statement-I is false, Statement-II is true

Answer 1

The correct option is B Statement-I is true, Statement-II is true; Statement-II is NOT a correct explanation for statement-I

molar conductivity of weak electrolytes at infinite dilution cannot be determined experimentally, firstly because the conductance of such a solution is low and secondly because dissociation of such an electrolytes is not completed even at high dilutions.

The molar conductivity of such an electrolyte at infinite dilution can be calculated using Kohlrausch’s law