COMEDK20269 May 2026Evening ShiftChemistrySolutionsActual
The system that forms maximum boiling azeotrope is:
Options
- AAcetone-chloroform
- BEthyl alcohol-water
- CCarbon-di-sulphide-acetone
- DBenzene-toluene
Correct answer
A. Acetone-chloroform
Step-by-step solution
A maximum boiling azeotrope is formed by solutions showing a large negative deviation from Raoult's law. In an acetone-chloroform mixture, hydrogen bonding occurs between the oxygen atom of acetone and the hydrogen atom of chloroform. This makes the intermolecular attractive forces between the two different molecules stronger than those in the pure liquids. As a result, the vapor pressure of the solution decreases, leading to a negative deviation from Raoult's law and the formation of a maximum boiling azeotrope. E