Chemistry - Liquid Solution Question with Solution | TestHub

ChemistryLiquid SolutionMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasysingle choice

3.0 molal aqueous solution of an electrolyte $A_{2} B_{3}$ is 50 % ionised. The boiling point of the solution at $1$ $a t m$ is: $[K_{b} (H_{2} O) = 0.52 K k g m o l^{- 1}]$

Options:

Answer:

Solution:

$A_{2} B_{3} (a q) \to 2 {A^{3}}^{+} (a q) + 3 B^{2 -} (a q)$
$n= 5$
$Δ T_{b} = i . K_{b} . m$
$= [1 + (n - 1) α] K_{b} . m .$
$= [1 + 4 α] K_{b} . m .$
$= [1 + 4 (0.5)] 0.52 \times 3$
$= (1 + 2) (0.52) \times 3$
$= 4.68$
$A_{b} = 373 + 4.68 = 377.68 K$

Stream:NTA_ABHYASSubject:ChemistryTopic:Liquid SolutionSubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2020

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