15. 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
a. 0.8
b. 0.6
c. 0.4
d. 0.2
Ans. b
(7)
5/5 - (4 votes)
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