The vapour pressure of pure benzene and toluene at a particular temper – McqOptions

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1.	The vapour pressure of pure benzene and toluene at a particular temperature are 100 mm and 50 mm respectively. Then the mole fraction of benzene in vapour phase in contact with equimolar solution of benzene and toluene is
A.	0.67
B.	0.75
C.	0.33
D.	0.5
Answer» B. 0.75

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