Solutions Question 44

Question: On adding solute to a solvent having vapour pressure 0.80 atm, vapour pressure reduces to 0.60 atm. Mole fraction of solute is [UPSEAT 2003]

Options:

A) 0.25

B) 0.75

C) 0.50

D) 0.33

Show Answer

Answer:

Correct Answer: A

Solution:

PoPsPo=nn+N ; Po=0.80,Ps=0.60
nn+N=0.20.8=0.25 .



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