Question

Ortho-nitrophenol is more volatile than para - nitrophenol because of :

A. Resonance

B. Presence of intermolecular hydrogen bonding in ortho isomer

C. Presence of intramolecular hydrogen bonding in ortho isomer

D.Presence of intramolecular hydrogen bonding in para isomer​

Answer 1

Answer:

d presence of intramolecular hydrogen bonding in para isomer

Answer 2

o-Nitrophenol forms intramolecular H bond whereas molecules of p-Nitrophenol get associated through intermolecular H bond. During boiling, the strong intermolecular H bonding increases the boiling point but intramolecular H bonding cannot do so.

Therefore, o-Nitrophenol is more steam volatile than p-Nitrophenol.