p
p
i nn
p
Elevation of Boiling point, DTb = i Kb m
Depression of Freezing point, DTf = i Kf m
Osmotic pressure of solution, P
= i n2 R T / V
Rationalised 2023-24
25
Solutions
2 g of benzoic acid (C6H5COOH) dissolved in 25 g of benzene shows a
depression in freezing point equal to 1 62 K Molal depression constant
for benzene is 4 9 K kg mol–1