Question

0. What should be the density of an aqueous solution of Urea (Molar mass = 60 g/mol) such that the molality
and molarity of the solution become equal ?
(1) 1.0 g/ml
(2) 1.6 g/mL
(3) 1.06 g/mL
(4) 1.16 g/mL
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Answer 1

0. What should be the density of an aqueous solution of Urea (Molar mass = 60 g/mol) such that the molality

and molarity of the solution become equal ?

(1) 1.0 g/ml

(2) 1.6 g/mL

(3) 1.06 g/mL✔

(4) 1.16 g/mL

Answer 2

Answer:

c. 1.06 g/mol

Explanation:

We know the Relationship both molarity

And molarity

1 d M.M

m M 1000

where, m = molarity M = molarity

d = density in gram ml

M.M = mole volume mass of solute = 60

gram

m = M (g/un)

1 d 60 1000

m 60 1000 m d 1 m

d -1 0.06 =

m

.. d= (0.06 m) + 1

if m= 1 than

d = 0.06 + 1 = 1.06

density = 1.06 gram /ml

option (c)