Molar conductivity of a weak acid HQ of concentration 0.18 M was found to be 1 \/ 30 of the molar conductivity of another weak acid HZ with concentration of 0.02 M . If \lambda^{\circ} Q ^{-}happened to be equal with \lambda^{\circ} Z ^{-}, then the difference of the pK _{ a } values of the two weak acids ( pK _{ a }( HQ )- pK _{ a }( HZ )) is \_\_\_\_ (Nearest integer). [Given: degree of dissociation (\alpha) ≪ 1 for both weak acids, \lambda^{\circ} : limiting molar conductivity of ions] [24 Jan 2026 Shift 2]

Electrochemistry Part 2

Section: Chemistry

Question : 4 of 117

Marks: +1, -0

Molar conductivity of a weak acid HQ of concentration 0.18 M was found to be 1∕30 of the molar conductivity of another weak acid HZ with concentration of 0.02 M . If λ∘Q−happened to be equal with λ∘Z−, 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]

[24 Jan 2026 Shift 2]

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