Chemistry - Liquid Solution Question with Solution | TestHub

ChemistryLiquid SolutionAbnormal Colligatiove PropertiesEasy2 minPYQ_2020

ChemistryEasysingle choice

What is the freezing point of a solution that contains $10 .0 g$ of a glucose ${(C}_{6} H_{12} O_{6})$ in $100 g$ of $H_{2} O?$ $K_{f} =1 .86°C/m$ .

Options:

Answer:

Solution:

$Δ T_{f} = K_{f} m = K_{f} \frac{W_{B}}{M_{B} . W_{A}}$

$= \frac{1.86 K kg mo l^{- 1} \times 10.0 g}{180 g mo l^{- 1} \times 100 g \times (\frac{1 kg}{1000 g})}$

$= \frac{1.86 \times 10.0 \times 1000 K}{180 \times 100}$

$= 1.03 K = 1.03 ° C$

F.P. of solution $= F . P$ of water $- Δ T_{f}$

$= 0 ° C - 1.03 ° C = - 1.03 ° C$

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

⏱ 2mℹ️ Source: PYQ_2020

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