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Liquids A and B form an ideal solution i...

Liquids A and B form an ideal solution in the entire composition range. At 350K, the vapor pressure of pure A and pure B are `7xx10^(3)` Pa and `12xx10^(3)` Pa, respectively. The composition of the vapor in equilibrium with a solution containing 40 mole percent of A at this temperature is :

A

`x_(A)=0.37, x_(B)=0.63`

B

`x_(A)=0.28, x_(B)=0.72`

C

`x_(A)=0.4, x_(B)=0.6`

D

`x_(A)=0.76, x_(B)=0.24`

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