Question

ww water and 20 degree Celsius 17 mm calculate the pressure of solution containing 2 gram UIDAI and 60 groundwater

Answer 1

use Raults law's related to solution

( P° - P)/P° = mole fraction of urea

where P° is the vapour pressure of water initially and P is the vapour pressure of solution .

( 17 - P)/17 = 2/60/( 2/60 + 18/60)

(17 - P)/17 = 1/30/(20/60) = 1/10

170 -10P = 17

170-17 = 10P

P = 153/10 = 15.3 mm Hg