6.0g of urea (molecular weight = 60) was dissolved in 9.9 moles of water. If the vapour pressure of pure water is P∘, the vapour pressure of solution is:
A
0.10P∘
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B
1.10P∘
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C
0.90P∘
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D
0.99P∘
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Solution
The correct option is D0.99P∘ P∘−PP∘=xsoluteorP∘−PP∘=nn+N