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Chemistry - Liquid Solution Question with Solution | TestHub

ChemistryLiquid SolutionAbnormal Colligatiove PropertiesEasy2 minPYQ_2020

ChemistryEasysingle choice

The weight of ethyl alcohol which must be added to 1.0 L of water so that the solution will freeze at $14 ° F$ is ( $K_{f}$ of water = 1.86 K kg $m o l^{- 1}$ )

Options:

Answer:

Solution:

$^{o} C = \frac{(^{o} F - 32) \times 5}{9}$
$14 ° F = - 10 ° C$
So $Δ T = 10$
$Δ T = K_{f} \times \frac{w_{B} \times 1000}{M_{B} \times w_{A}}$
$10 = 1.86 \times \frac{w_{B} \times 1000}{46 \times 1000}$
$w_{B} = 247.31$ g.

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

⏱ 2mℹ️ Source: PYQ_2020

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