Chemistry - Liquid Solution Question with Solution | TestHub

ChemistryLiquid SolutionAbnormal Colligatiove PropertiesEasy2 minPYQ_2020

ChemistryEasysingle choice

A salt MA₂ionises as

${MA}_{2} ⇌ M^{2 +} + 2 A^{-}$

It was found that a given solution of the salt had the same freezing point as solution of glucose of twice the molality. The apparent degree of ionization of the salt is

Options:

Answer:

Solution:

$\begin{matrix} {MA}_{2} & ⇌ & M^{2 +} & + & 2 A^{-} \\ 1 - α & α & 2 α \end{matrix}$

$i = \frac{Actual no. of particles in solution}{Number of particles taken}$

$i = 1 + 2 α$

$Δ T_{f}$ of ${MA}_{2} = Δ T_{f}$ of glucose

$i \cdot K_{f} \cdot m = K_{f} \cdot 2 m \times i$

$1 + 2 α = 2 \Rightarrow 2 α = 1 \Rightarrow α = 0.5$

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:Liquid SolutionSubtopic:Abnormal Colligatiove Properties

⏱ 2mℹ️ Source: PYQ_2020

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