Chemistry 5 Marks Questions

Derive formula for degree of dissociation and degree of condensation of the solute in the solvent.

(a) What is reverse osmosis? How is water purified through it? Explain.
(b) Write the applications of osmosis.

How to determine the vapour pressure and total pressure of the components in binary solution of two volatile liquids? Explain their mathematical form and also explain the graph between mole fraction and vapour pressure for an ideal solution.

Prove that boiling point elevation (AT) is proportional to the molality of solute present in the solution. Also find its mathematical form.

Derive a formula to determine the molar mass of a solute by depression of freezing point.

(a) What is van't Hoff factor? Explain.
(b) Write the equation of molecular number properties including van't Hoff factor.

What is abnormal molar mass? Explain.

What is vapour pressure? When a non- volatile solute is dissolved in any liquid, the vapour pressure of the liquid decreases. Give reason.

Prove that the relative depression of vapour pressure is equal to the mole fraction of solute.