The vapour pressure of pure water at a given temperature is 100 mm Hg. Calculate the vapour pressure of a solution in which the mole fraction of water is 0.9.

Calculate the molality of a solution containing 18 g of glucose in 500 g of water. (Molar mass of glucose = 180 g)

State Henry's law and give two of its applications.

State Raoult's law and distinguish between positive and negative deviations from it.

Name the four colligative properties and state what colligative means.

What is the van't Hoff factor, and what values does it take for sodium chloride and for acetic acid in benzene?

Distinguish between Schottky and Frenkel defects and state the effect of each on density.