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Chemistry - Electrochemistry Question with Solution | TestHub

ChemistryElectrochemistryConductance/conductivity/^mEasy2 minPYQ_2020

ChemistryEasysingle choice

What will be the molar conductivity of $A l^{3 +}$ ions at infinite dilution if molar conductivity of $A l_{2} (S O_{4})_{3}$ is 858 S $c m^{2} m o l^{- 1}$ and ionic conductance of $S O_{4}^{2 -}$ is 160 S $c m^{2} m o l^{- 1}$ at infinite dilution?

Options:

Answer:

Solution:

$Λ_{A l_{2} (S O_{4})_{3}}^{o} = 2 Λ_{A l^{3 +}}^{o} + 3 Λ_{S O_{4}^{2 -}}^{o}$
$Λ_{A l^{3 +}}^{o} = \frac{Λ_{A l_{2} (S O_{4})_{3}}^{o} - 3 Λ_{S O_{4}^{2 -}}^{o}}{2}$
$= \frac{858 - (3 \times 160)}{2} = 189 S c m^{2} m o l^{- 1}$

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:ElectrochemistrySubtopic:Conductance/conductivity/^m

⏱ 2mℹ️ Source: PYQ_2020

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