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10 mole of liquid 'A' and 20 mole of liq...

10 mole of liquid 'A' and 20 mole of liquid 'B' is mixed in a cylindrical vessel containing a piston arrangement. Initially a pressure of 2 atm is maintained on the solution. Now, the piston is raised slowely and isothermally. Assume ideal behaviour of solution and A and B are completely miscible.
`P_(A)^(@) = 0.6` atm and `P_(B)^(@) = 0.9` atm
The pressure below which the evaporation of liquid solution will start, is

A

`0.783`

B

`0.800`

C

`0.600`

D

`0.652`

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The correct Answer is:
A
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