Question

Reason for the negatives deviation from raoults law

Answer 1

Answer:

If the vapor pressure of a mixture is lower than expected from Raoult's law, there is said to be a negative deviation. Negative deviations from Raoult's law arise when the forces between the particles in the mixture are stronger than the mean of the forces between the particles in the pure liquids.

Answer 2

Answer:

(1) A solution or a liquid mixture which has lower vapour pressure than theoretically calculated by Raoult's law or lower than those of pure components is called a nonideal solution with negative deviation.

(2) In these solutions, the intermolecular interactions between solvent and solute molecules are stronger than solvent-solvent or solute-solute interactions.

(3) For example, solutions of phenol and aniline, chloroform and acetone, etc.