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A graph is plotted between the vapour pr...

A graph is plotted between the vapour pressure and mole fraction of a solutionn containing benzene and toluene. Select the correct statements.

A

At the point `a`, the mole fraction of toluene is `0.80`

B

`b rarr c` represents condesation

C

`c rarr d` represents vaporization

D

`c rarr d` represents vaporization as well as condensation

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
Let `A = "Benzene and B" = "Toluene" X_(A) + X_(B) = 1`
From graph `X_(A) = 0.2 rArr X_(B) = 0.8`
From the graph,
point `c =` composition in solution,
point `d =` composition in vapours and `d gt c`
`rArr` vaporisation process,
From the graph,
Composition of vapour `=` composition of solution, which only occurs when condensation of vapours is done.
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