List of top Chemistry Questions on Vapour Pressure of Liquid Solutions asked in CBSE Class XII

61 g benzoic acid (M = 122 g mol$^{-1}$) dissolved in 500 g benzene. Vapour pressure of pure benzene = 66 torr. Assume complete dimerisation. Calculate vapour pressure of solution.

When a liquid and its vapour are at equilibrium and the pressure is suddenly decreased:

When a liquid and its vapour are at equilibrium and the pressure is suddenly decreased :

State Raoult's law for a solution containing volatile components. Write any two characteristics of a solution which obeys Raoult's law at all concentrations.

Explain why, on addition of 1 mol of KCl to 1 litre of water, the boiling point of water increases, while addition of 1 mol of methyl alcohol to 1 litre of water decreases the boiling point.