REVIEW EXERCISES

The freezing point of aqueous solution of sugar is_____than the freezing point of water.

Give one example each when Van't Hoff's factor is $2$ and $\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right.$?

How is that the boiling point of the following solutions in water are different:

i) $0.1 \mathrm{M} \mathrm{NaCl}$ solution      ii) $0.1 \mathrm{M}$ sugar solution?

Mention a large scale use of the phenomena of reverse osmosis.

What is the sum of mole fractions of all the components in a three component system?

How is the molality of a solution different from its molarity?

Define Henry's law about solubility of a gas in a liquid.

Two liquids $\mathrm{X}$ and $\mathrm{Y}$ boil at $145°\mathrm{C}$ and $190°$ respectively. Which of them has higher vapour pressure at $80°\mathrm{C}?$