Total vapour pressure of mixture of l mol XPX∘=150 torr) and 2 mol YPy=300 torr is 240 torr. In this case:

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There is a negative deviation from Raoult's law

There is a positive deviation from Raoult's law

There is no deviation from Raoult's law

Can not be decided

answer is A.

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Detailed Solution

PIdealsolution =13×150+23×300=250 ∵PSolution

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