Chemistry - Electrochemistry Question with Solution | TestHub

ChemistryElectrochemistryConductance/conductivity/^mEasy2 minPYQ_2020
ChemistryEasysingle choice

At 298 K the molar conductivities at infinite dilution∧moofNH4Cl, KOHandKClare 152.8, 272.6 and 149.8 Scm2 mol-1respectively. The∧moofNH4OHinS cm2 mol-1and % dissociation of 0.01 MNH4 OHwith∧m=25.1 S cm2 mol-1at the same temperature are

Options:

Answer:
B
Solution:

∧moNH4OH= ∧moNH4Cl+KOH- ∧moKCl

=152.8+272.6-149.8

=275.6 S cm2  mol-1

Degree of dissociationα=∧m∧mo=25.1275.6

=0.091

∴% degree of dissociation = 9.1%

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

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