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Grade 12Physical Chemistry

Explain why 0-nitrophenol has a lower boiling point than p-nitrophenol?

Profile image of Raghav
12 Years agoGrade 12
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1 Answer

Profile image of Anjali Ahuja
11 Years ago
o-nitrophenol forms intramolecular H bond and no association occurs whereas molecules of p-nitrophenol get associated through intermolecular H bonding and boils relatively at higher tem. (above the B.P.of water). Hence,only
ortho-nitrophenol is steam volatile.
The bondings are shown in the diagram

261-310_nitrophenol20isomers.JPG