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The vapour pressures of pure liquids A a...

The vapour pressures of pure liquids A and B are 400 and 600 mmHg respectively at 298 K. On mixing the two liquids, the sum of their initial volumes is equal to the volume of the final mixture . The mole fractional of liquid B is 0.5 in the mixture. The vapour pressure of the final solution, the mole fraction of components A and B in vapour phase, respectively are

A

500 mm Hg , 0.5 , 0.5

B

450 mm Hg , 0.4 , 0.6

C

450 mm Hg , 0.5 , 0.5

D

500 mm Hg , 0.4 , 0.6

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The correct Answer is:
D
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