Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Mass of Urea (NH 2 CONH 2 ) required to be dissolved in 1000 g of water in order to reduce the vapour pressure of water by 25% is_______g. (Nearest integer)
Given : Molar mass of N, C, O and H are 14, 12, 16 and 1 g mol -1 respectively.
Text Solution
Verified by ExpertsThe correct answer is:
1111
(1111)
Relative lowering of vapour pressure=Mole fraction of solute
=moles of urea
Mass of urea= 
= 1111.11 gm
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