The freezing point of a solution containing 0.2 g of acetic acid in 20.0 g benzene is lowered by 0.45°C. The degree of association of acetic acid in benzene is (Assume acetic acid dimerises in benzene and Kf for benzene = 5.12 K kg mol⁻¹) Mₒbserved of acetic acid = 113.78
A
94.5%
B
54.9%
C
78.2%
D
100%

Question

The freezing point of a solution containing 0.2 g of acetic acid in 20.0 g benzene is lowered by 0.45°C. The degree of association of acetic acid in benzene is (Assume acetic acid dimerises in benzene and Kf for benzene = 5.12 K kg mol⁻¹) Mₒbserved of acetic acid = 113.78

A

94.5%

B

54.9%

C

78.2%

D

100%

Accepted Answer

94.5%

Answer

54.9%

Answer

78.2%

Answer

100%

AIIMS 2016 Chemistry Colligative Properties MCQ Question

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