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Laws of Definite Proportions, Multiple Proportions

20.An aqueous...

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20.An aqueous solution of urea containing 18 g urea in 1500 cc of solution has a density of 1.052 g/cc. If the mol. Wt. Of urea is 60 then the molality of solution is?

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Q. An aqueous solution of urea containing 18g urea in 1500 cm

^{3}

of the solution has a density equal to 1.052. If the molecular weight of urea is 60, the molality of the solution is:

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}

)

Q. The mole fraction of urea in an aqueous urea solution containing

900 g

0.05

. If the density of the solution is

1.2 g c m^{- 3}

, the molarity of urea solution is______
(Given data: Molar masses of urea and water are

60 g m o l^{- 1}

18 g m o l^{- 1}

, respectively.)

Q. 255 g of an aqueous solution contains 5 g of urea. What is the concentration of the solution in terms of molality?
(Molar mass of urea = 60 g/mol)

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).

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Laws of Definite Proportions, Multiple Proportions

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