MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryElectrochemistryPrevious Year Questions

Assertion (A) On dilution, the equivalent as well as molar conductivity of solution increases. Reason (R) With dilution, the number of current carrying particles per cm3 increases. [AIIMS 2010]

A.Both A and R are correct and R is the correct
B.Both A and R are correct and R is not the correct
C.A is correct but R is incorrect✓ Correct
D.Both A and R are incorrect
Explanation

On dilution, the interionic attractions decrease, so dissociation increases. Thus, equivalent as well as molar conductivity of solution increases. This is because the total V of a solution containing 1g equivalent or 1 mole of electrolyte also increase. However, the number of current carrying particles per cm3 decreases on diluting the solution.

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