(i) The colligative property which is used to find the molecular mass of macromolecules is osmotic pressure.
π = cRT
where π = osmotic pressure
c = concentration
R = gas constant
T = Temperature
By the above formula, we can calculate the molecular mass of macromolecules.
(ii) In non-ideal solution, positive deviation shows the formation of minimum boiling azeotropes.
Note: The type of liquid mixture, having a definite composition, and boiling like a pure liquid, is called an azeotropic mixture
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