what is hydrogen bonding? diffrentiate between intermolecular and intramolecular hydrogen bonding?
Answers
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…….
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.
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.
Hope this helps.