Question

Why alcohol has a lower boiling point than water?

Answer 1

There are less extensive hydrogen bonding between ethanol molecules than between water molecules, thus less energy is needed to vaporise ethanol than water and water has a higher boiling point than ethano hydrogen bonding between the molecules of water is higher than the bonding between the molecules of ethanolwhich means more heat energy is required to break the bonds of molecules of water which leads to the increase in collision of the water molecules there by increasing the boiling point.