Questions
The weight of urea to be dissolved in 100 g. of water to decrease the vapour pressure of water by 5% is
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By Expert Faculty of Sri Chaitanya
a
20 g.
b
14.66 g
c
15.24 g
d
16.66 g.
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Correct option is D
Given, Wt. of urea(solute)=xg ; Wt. of solvent(water)=100gm
Lowering of V.P (LVP)=5%
RLVP=
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