Statement Addition of a non-volatile solute causes a depression in vapour pressure.
Explanation vapour pressure of a solution is directly proportional to mole fraction of solvent.

Relative lowering in vapour pressure of solution containing non-volatile solute is directly proportional to mole fraction of solute. Above statement is

If Raoult's law is obeyed, the vapour pressure of the solvent in a solution is directly proportional to

If Raoult's law is obeyed, the vapour pressure of the solvent in a solution is directly proportional to

If Raoult's law is obeyed, the vapour pressure of the solvent in a solution is directly proportional to

If Raoult's law is obeyed, the vapour pressure of the solvent in a solution is directly proportional to

Vapour pressure of a solution containing a non volatile solute is

Addition of a non-volatile solute causes lowering in vapour pressure of a solvent from 0.8atm to 0.2atm . What is the mole fraction of solvent ?

Assertion: Elevation in boiling point is inversely proportional to lowering of vapour pressure for dilute solutions. Reason: Lowering of vapour pressure is directly proportional to mole fraction of solvent.

(a) Define vapour pressure (b) Explain why vapour pressure of a solvent lowered by the addition of non-volatile solute ?