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The molar conductivity of 0.007M acetic acid is 20S cm^2 mol^-1. What is the dissociation constant of acetic acid? Choose the correct option. λ…

NEET UG 2021 — Chemistry Physical Chemistry

2021mcqhard

The molar conductivity of 0.007M0.007M0.007M acetic acid is 20Scm2mol−1.20S{\mathrm{cm}}^{2}{\mathrm{mol}}^{-1}.20Scm2mol−1. What is the dissociation constant of acetic acid? Choose the correct option.

λH+∘=350Scm2mol−1λCH3COO−∘=50Scm2mol−1{\lambda }_{{H}^{+}}^{\circ }=350S{\mathrm{cm}}^{2}{\mathrm{mol}}^{-1} {\lambda }_{{\mathrm{CH}}_{3}{\mathrm{COO}}^{-}}^{\circ }=50S{\mathrm{cm}}^{2}{\mathrm{mol}}^{-1}λH+∘​=350Scm2mol−1λCH3​COO−∘​=50Scm2mol−1

Official previous-year question

Held on 30 Apr 2021 · Verified 9 Jul 2026.

Options

  1. A

    1.75×10−4molL−11.75\times {10}^{-4}\mathrm{mol}{L}^{-1}1.75×10−4molL−1

  2. B

    2.50×10−4molL−12.50\times {10}^{-4}\mathrm{mol}{L}^{-1}2.50×10−4molL−1

  3. C

    1.75×10−5molL−11.75\times {10}^{-5}\mathrm{mol}{L}^{-1}1.75×10−5molL−1

  4. D

    2.50×10−5molL−12.50\times {10}^{-5}\mathrm{mol}{L}^{-1}2.50×10−5molL−1

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