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The total vapour pressure of a mixture o...

The total vapour pressure of a mixture of `1 mol` `A` (P_(A)^(@)=150 "torr")` and `2 mol` `B` (P_(B)^(@)=240 "torr")` is `200 mm`.
In this case

A

there is positive deviation from Raoult's law

B

there is negative deviation from Raoult's law

C

there is no deviation from Raoult's law

D

molecular masses of A and B are also required for calculating the deviation

Text Solution

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The correct Answer is:
B
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