Question

Rault's law is not valid for non ideal solutions​

Answer 1

Raoult's Law

When two miscible volatile liquids are heated the partial pressure of one component is equal to the product of the mole fraction and pure pressure of that component.

Alternatively, the partial pressure of each component in the solution is directly proportional to its mole fraction.

Non-Ideal Solutions.

they do not obey Raoult's law at any concentration. These are solution in which solute-solute and solvent-solvent interactions are different than solute-solvent interactions.

A-A or B-B interaction is not equal to A-B interaction.

∆mixH is not equal to 0

∆mixV is not equal to 0

There are two type of such solution

• Solution which show positive deviation from Ideal solution if A-A or B-B interaction is greater than A-B interaction.

• solutions which show negative deviation from Ideal solution if A-A or B-B interaction is less than A-B interaction.