Trichloromethane, CHCl₃, and propanone, C₃H₆O, form liquid-vapour mixtures with a maximum-boiling azeotrope. What does this imply about the nature of the interactions between the molecules in the mixture?

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The fact that trichloromethane and propanone form a maximum-boiling azeotrope implies that there are strong interactions between the molecules in the mixture. This means that it is more difficult for the molecules to escape from the liquid to the vapour phase, leading to a higher boiling point than would be expected based on the boiling points of the individual components.

Trichloromethane, CHCl3, and Propanone, C3H6O, Form Liquid-Vapour Mixtures with a Maximum-Boiling

Trichloromethane, CHCl₃, and Propanone, C₃H₆O, Form Liquid-Vapour Mixtures with a Maximum-Boiling