Solutions Question 128

Question: 60 gm of Urea (Mol. wt 60) was dissolved in 9.9 moles, of water. If the vapour pressure of pure water is Po , the vapour pressure of solution is [DCE 2000]

Options:

A) 0.10 Po

B) 1.10 Po

C) 0.90 Po

D) 0.99 Po

Show Answer

Answer:

Correct Answer: C

Solution:

P0PsP0=nNP0PsP0=19.99.9P09.9Ps=P0

8.9P0=9.9PsPs=8.99.9P00.90P0



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