$M w_{N}$ = Normal molecular mass of solute
$M w_{2}$ =Observed molecular mass of solute from colligative property measurement.

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Solution

0.1 M $C H_{3} C O O H$ in benzene undergoes association. Hence, the Van't Hoff factor $i < 1 (M w_{2} > M w_{N})$
0.1 M urea in water neither associates nor dissociates. Hence, the Van't Hoff factor i=1 $(M w_{2} = M w_{N})$
0.05 M $B a {C l}_{2}$ in water undergoes dissociation
Hence, the Van't Hoff factor $i = 3 (a s s u m i n g α = 1) (M w_{2} = \frac{M w_{N}}{3})$
0.1 M $C H_{3} C O O H$ in water undergoes dissociation. Hence, the Van't Hoff factor $i > 1 (M w_{o} < M w_{N})$

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Similar questions

Column - I	Column - II
a) When the molecular state of solute in solution is unchanged	p) The observed colligative property is normal.
b) When the solute undergoes association in solution .	q) inversely proportional to the molecular mass of the solute
c) When the solute undergoes dissociation is solution.	r) The observed colligative property is larger in magnitude.
d) A colligative property	s) The observed colligative property is smaller in magnitude

K C l

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