Question

What is intramolecular hydrogen bond?give one example ?

Answer 1

H-bonding is electrostatic force of attraction between n electronegative element and a Hydrogen attached to an electronegative elemennt.

This could happen in two ways…….

(1)Intermolecular: when the the attraction is btween two distinct molecules of same or different compounds. For example, between two molecules of water or between a molecule of water and a molecule of ammonia.

(2)Intramolecular: when the such attraction is among two parts of a molecule. For example, H of hydroxyl group is attracted by O of nitro group in o-nitrophenol.

Inter molecular H-bonding increases intermolecular attraction hence increases boiling point, viscosity and surface tension.

Whereas, intramolecular H-bonding tends to decrease the surface area of molecule hence decreases boling point and surface tension.

Answer 2

Answer:

Explanation:

The hydrogen bonding which takes place within a molecule itself is called intramolecular hydrogen bonding.

For example, intramolecular hydrogen bonding occurs in ethylene glycol (C2H4(OH)2) between its two hydroxyl groups due to the molecular geometry.