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ChemistryElectrochemistryConductance/conductivity/^mEasy2 minPYQ_2020
ChemistryEasysingle choice

The equivalent conductances of two strong electrolytes at infinite dilution in H 2 O (where ions move freely through a solution) at 25 ℃ are given below :

 Λ  CH 3 COONa o  =  91.0 S cm 2 / equivalent

 Λ  HCl o  =  426.2 S cm 2 / equivalent .

What additional information/quantity one needs to calculate  Λ o of an aqueous solution of acetic acid?

Options:

Answer:
B
Solution:

According to Kohlrausch's law, the molar conductivity at infinite dilution  Λ o for weak electrolyte, CH 3 COOH is

 Λ CH 3 COOH o =  Λ CH 3 COONa o +  Λ HCl o -  Λ NaCl o

So, for calculating the value of  Λ CH 3 COOH o , value of  Λ NaCl o should also be known.

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

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