A solution has a 1: 4 mole ratio of pentane to hexane. The vapour pressures of the pure hydrocarbons at 20^{\circ} {\C} are 440 {\mm} {\Hg} for pentane and 120 {\mm} {\Hg} for hexane. The mole fraction of pentane in the vapour phase would be-

AIPMT 2005 Physics and Chemistry Paper

Question : 75 of 100

Marks: +1, -0

A solution has a 1:4 mole ratio of pentane to hexane. The vapour pressures of the pure hydrocarbons at 20∘C are 440‌mm‌Hg for pentane and 120‌mm‌Hg for hexane. The mole fraction of pentane in the vapour phase would be-

0.200
0.478
0.549
0.786

Validate

Go to Question:

Prev Question

Next Question