Answers

MR.JAGDEESH
Jul 26, 2020

In pure alcohol and water, the molecules are held tightly by a strong hydrogen bonding. The interaction between the molecules of alcohol and water is weaker than  alcohol-alcohol and water-water interactions. As a result, when alcohol and water are mixed, the  intermolecular interactions become weaker and the molecules can easily  escape. This increases the vapour pressure of the solution, which in turn lowers the boiling point of the resulting solution.