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ChemistryLiquid SolutionAbnormal Colligatiove PropertiesMedium2 minPYQ_2023

ChemistryMediumsingle choice

What is the molality of solution of a nonvolatile solute having boiling point elevation $7.15 K$ and molal elevation constant $2.75 K kg mol^{- 1}$ ?

Answer:

Solution:

$Δ T_{b} = K_{b} \times m$ $∴ m = \frac{Δ T _{b}}{K _{b}}$ $= \frac{7.15 K}{2.75 Kkg mol ^{- 1}}$ $= 2.6 mol kg^{- 1}$

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

⏱ 2mℹ️ Source: PYQ_2023

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