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ChemistryElectrochemistryConductance/conductivity/^mEasy2 minPYQ_2020
ChemistryEasysingle choice

Acetic acid is a weak acid. The molar conductances of 0.05 M acetic acid at25°Cis 7.36 Scm2mol-1. If itsΛm∞is 390.72 Scm2mol-1. The value of equilibrium constant is

Options:

Answer:
A
Solution:

αc=Λme/Λm∞
=7.36/390.72=0.019
SoKα=[CH3COO-1(aq)][H3O+(aq)][CH3COOH]
=Cα21-α≈Cα2
=1.8×10-5

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:ElectrochemistrySubtopic:Conductance/conductivity/^m
⏱ 2mℹ️ Source: PYQ_2020

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