Answer to Question #33028 in Physical Chemistry for cedric
the vapour pressure of h20 at 20degrees Celsius is 17mmhg.calculate the vapour pressure of solution of 3g of urea in 50g of water
To solve this we can use Raoult's law: p = p'x x = x(H2O) = 50/18 = 2.78 moles; moles of urea(CH4N2O) = 3/60 = 0.05 moles; mole fraction of water in solution = 2.78/(2.78 + 0.05) = 0.98 p'x = 17*0.98 = 16.66
Dread it, run from it, the end of summer arrives all the same. And now it's here. It’s finally August.…
APPROVED BY CLIENTS
The service provided was outstanding. The completed assignment was finished and emailed by the deadline, without having to request any revisions. I would definitely use the service again and would recommend it to students at any level.