Liquids A and B form an ideal solution in the entire composition range. At 350 {\K}, the vapor pressures of pure {\A} and pure {\B} are 7 \times10^{3} {\Pa} and 12 \times10^{3} {\Pa}, respectively. The composition of the vapour is in equilibrium with a solution containing 40 mole percent of {\A} at this temperature is:

Correct Answer is : xA=0.28;xB=0.72

BITSAT 2021 Paper

Section: Chemistry

Question : 50 of 150

Marks: +1, -0

Liquids A and B form an ideal solution in the entire composition range. At 350K, the vapor pressures of pure A and pure B are 7×103‌Pa and 12×103‌Pa, respectively. The composition of the vapour is in equilibrium with a solution containing 40 mole percent of A at this temperature is:

xA=0.37;xB=0.63
xA=0.28;xB=0.72
xA=0.4;xB=0.6
xA=0.76;xB=0.24

Validate

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