Dilution affects both conductivity as well as molar ...

CBSE Class 12 Chemistry 2024 All Sets Solved Paper

Question : 11 of 16

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Dilution affects both conductivity as well as molar conductivity. Effect of dilution on both is as follows:

both increase with dilution.
both decrease with dilution.
conductivity increases whereas molar conductivity decreases dilution.
conductivity decreases whereas molar conductivity increases on dilution.

Solution:

Conductance is define for the no. of ions per ml. On dilution as volume of solution increase. Thus no. of ions per ml decrease and hence conductivity decreases.
Molar conductivity is defined for 1 mole of ions. Thus on dilution ions more apart and mobility of ions increase which leads to increase in molar conductivity of the solution.

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