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Solution


Q.

Molar conductivity of a weak acid HQ of concentration 0.18 M was found to be 130 of the molar conductivity of another weak acid HZ with concentration 0.02 M. If λQ-∘ happened to be equal to λZ-∘, then the difference of the pKa values of the two weak acids (pKa(HQ)-pKa(HZ)) is _______ (Nearest integer).

[Given: degree of dissociation (α)≪1 for both weak acids, λ°: limiting molar conductivity of ions]                [2026]

Ans.

(2)