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Two liquids A and B have vapour pressure in the ratio P_{A}^{}

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Two liquids A and B have vapour pressure in the ratio PA∘:PB∘=1:3 at

Two liquids $A$ and $B$ have vapour pressure in the ratio $P_{A}^{\circ} : P_{B}^{\circ} = 1 : 3$ at a certain temperature. Assume $A$ and $B$ form an ideal solution and the ratio of mole fractions of $A$ to $B$ in the vapour phase is $4 : 3$ . Then the mole fraction of $B$ in the solution at the same temperature is :

$\frac{1}{5}$
$\frac{2}{3}$
$\frac{4}{5}$
$\frac{1}{4}$

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Updated on: Jun 28, 2023

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Lucas Discussed

Two liquids

A

and

B

have vapour pressure in the ratio

P_{A}^{\circ} : P_{B}^{\circ} = 1 : 3

at a certain temperature. Assume

A

and

B

form an ideal solution and the ratio of mole fractions of

A

B

in the vapour phase is

4 : 3

. Then the mole fraction of

B

in the solution at the same temperature is :

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Question Text	Two liquids $A$ and $B$ have vapour pressure in the ratio $P_{A}^{\circ} : P_{B}^{\circ} = 1 : 3$ at a certain temperature. Assume $A$ and $B$ form an ideal solution and the ratio of mole fractions of $A$ to $B$ in the vapour phase is $4 : 3$ . Then the mole fraction of $B$ in the solution at the same temperature is :
Updated On	Jun 28, 2023
Topic	Gases & Solutions
Subject	Chemistry
Class	Class 12
Answer Type	Video solution: 3
Upvotes	252
Avg. Video Duration	7 min

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Two liquids A and B have vapour pressure in the ratio PA∘​:PB∘​=1:3 at a certain temperature. Assume A and B form an ideal solution and the ratio of mole fractions of A to B in the vapour phase is 4:3. Then the mole fraction of B in the solution at the same temperature is :

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