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Two liquids X and Y from an ideal soluti...

Two liquids X and Y from an ideal solution at`300K`, Vapour pressure of the Solution containing `1`mol of X and `3`mol of Y is `550`mmHg . At the same temperature, if `1` mol of Y is further added to this solution ,vapour pressur of the solutions increases by `100`mmHg Vapour pressure (in mmHg) of X and Y in their pure states will be,respectively

A

400 and 600

B

500 and 600

C

200 and 300

D

300 and 400

Text Solution

Verified by Experts

The correct Answer is:
A
`550 = P_(A)^(@) xx (1)/(4) +P_(B)^(@) xx (3)/(4)`
`560 = P_(A)^(@) xx (1)/(5) +P_(B)^(@) xx (4)/(5)`
`P_(A)^(@) = 400 P_(B)^(@) = 600` tor
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