Home
Class 12
CHEMISTRY
For a dilute solution, Raoult's law stat...

For a dilute solution, Raoult's law states that

A

The lowering of vapour pressure is equal to the mole fraction of the solute

B

The relative lowering of vapour pressure is equal to the mole fraction of the solute

C

The relative lowering of vapour pressure is proportional to the amount of solute in the solution.

D

The vapour pressure of the solution is equal to the mole fraction of the solvent.

Text Solution

Verified by Experts

The correct Answer is:
B

The relative lowering of vapour pressure is equal to the mole fraction of the solute.
Promotional Banner

Similar Questions

Explore conceptually related problems

Boric acid a dilute solution is used as :

An ideal solution follows Raoult's law over all ranges of concentrations and pressure.

The vapour pressure of a pure liquid A is 40 mm Hg at 310 K . The vapour pressure of this liquid in a solution with liquid B is 32 mm Hg . The mole fraction of A in the solution, if it obeys Raoult's law, is:

(a) The vapour pressures of benzene and toluene at 293 Kare 75 mm Hg and 22 mm Hg respectively. 23.4 g of benzene and 64.4 g of toluene are mixed. If the two form an ideal solution, calculate the mole fraction of benzene in the vapour phase assuming that the vapour pressures are in equilibrium with the liquid mixture at this temperature. (b) What is meant by +ve and -ve deviations from Raoult's law and how is the sign of H solution related to +ve and -ve deviations from Raoult's law ?

Two liquids A and B on mixing produce a warm solution. Which type of deviation from Raoult's law does it show?

The osmotic pressure of a dilute solution is given by

Negative deviations from Raoult's law are exhibited by binary mixtures

Mixing of acetone with chloroform takes place with reduction in volume? What type of deviation from Raoult's law is shown in this case?

b) i) A non ideal solution has DeltaH_("mixing")gt0 . What type of deviation does it show from Raoult's law? ii) What is an azeotrope?