Mixture of chloroform and acetone forms a solution with negative deviation from Raoult's law due to :

Step-by-step solution

Chloroform ( CHCl₃ ) and acetone ( CH₃COCH₃ ) form a non-ideal solution showing a negative deviation from Raoult's law. This is because the hydrogen atom of chloroform forms a hydrogen bond with the oxygen atom of acetone. The formation of this intermolecular hydrogen bond makes the attractive forces between the unlike molecules stronger than the attractive forces between the like molecules. As a result, the escaping tendency of the molecules from the liquid phase decreases, leading to a lower vapour pressure than