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Chemistry - Liquid Solution Question with Solution | TestHub

ChemistryLiquid SolutionAbnormal Colligatiove PropertiesHard2 minPYQ_2018

ChemistryHardsingle choice

When $45 g$ of solute is dissolved in $600 g$ water, freezing point gets lowered by $2.2 K$ , calculate molar mass of solute. $(K_{f} = 1.86 K kg mol^{- 1})$

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Answer:

Solution:

$w_{1} = 600 g, Δ T_{f} = 2.2 K w_{2} = 45 g, K_{f} = 1.86 K kg mol^{- 1} M = \frac{K _{f} \times w _{2}}{Δ T _{f} \times w _{1}} = \frac{1.86 \times 45 \times 1000}{2.2 \times 600} = 63.4 g mol^{- 1}$

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

⏱ 2mℹ️ Source: PYQ_2018

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