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16. The vapour pressure of a solvent A is 0.08 atm when a non volatile substance B is added to this solvent its vapour pressure drops to 0.6 atm. What is mole fraction of B in solution

a. 0.25

b. 0.50

c. 0.75

d. 0.90

Ans. a

(12)

5/5 - (1 vote)

PrevPrevious15. The vapour pressure of a solvent decreased by 10mm of mercury, when a non volatile solute was added to the solvent. The mole fraction of the solute in the solutions is 0.2. What should be the mole fraction of the solvent, if decrease in the vapour pressure is to be 20mm of mercury

Next17. Two liquids X and Y form an ideal solution. The mixture has a vapour pressure of 400 mm at 300 K when mixed in the molar ration of 1:1 and a vapour pressure of 350 mm when mixed in the molar ration of 1 : 2 at the same temperature. The vapour pressure of the two pur liquids X and Y respectively areNext

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