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Osmotic Pressure

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Calculate the molality of a solution of urea in acetic acid if the mole fraction of urea in solution is 0.5 ( molecular weight of urea=60) (1) 50/3 (2) 25/3 (3) 100/3 (4) 40/3

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Q. An aqueous solution of urea containing 18g urea in 15

c m^{3}

of the solution has a density equal to 1.052

g / c m^{3}

. If the molecular weight of urea is 60, then the molality of the solution is:

Q. Calculate the molality and mole fraction of the solute in an aqueous solution containing 6 g of urea per 500 g of water (Mol. mass of urea = 60).

Q. Mass percentage of urea in aqueous solution is 30%.The molality of urea in the solution is:
(Mol. wt. of urea = 60 g mole

^{- 1}

)

1 \times 10^{- 3}

kg of urea is present in 400 cubic centimetre solution at 310 K. Calculate the approximate osmotic pressure of the solution.

R = 8.314 J {m o l}^{- 1} K^{- 1}

, molecular weight of urea = 60)

22.22

gram of urea was dissolved in

300

grams of water. Calculate the number of moles of urea and molality of the urea solution.
(Given: Molar mass of urea

= 60

m o l^{- 1}

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