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ChemistryElectrochemistryMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasynumerical

The equivalent conductance of monobasic acid at infinite dilution is 348 $o h m^{- 1} c m^{2} e q^{- 1}$ . If the resistivity of the solution containing 15 g acid (mol. wt 49) in litre is 18.5 ohm cm. What is the % degree of dissociation of acid? Report your answer up to two decimal places without rounding up.

Answer:

50.74

Solution:

$λ_{N} = \frac{k \times 1000}{N}$
$= \frac{1000 \times 49 \times 1000}{18.5 \times 15 \times 1000}$
$= 176.6$
$α = \frac{λ_{v}}{λ_{\infty}}$
$= \frac{176.6}{348} = 0.5074$

Stream:NTA_ABHYASSubject:ChemistryTopic:ElectrochemistrySubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2020

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