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Q.

The vapour pressure of pure liquids A and B are 450 & 700 mm Hg respectively at 350K. If the total vapour pressure of solution (A+B) is 600 mm Hg, then which of the following is/are correct?

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a

Mole fraction of A in liquid mixture is 0.4

b

Mole fraction of A in liquid mixture is 0.6

c

Mole fraction of A in vapour phase is 0.3

d

Mole fraction of A in vapour phase is 0.35

answer is A, C.

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Detailed Solution

PT=PAo×A+PBo(1XA)           1PT=YAPAo+YBPBo

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