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Asked by P Murali Krishna

May 4, 2015

Boiling point of p-nitro phenol is more than O- nitro phenol. Why?

Boiling point of  p-nitrophenol is more than O- nitrophenol. Why?

Answers(1)

Answer

Swathi Ambati

Member since Apr 28, 2014

Ortho nitophenol shows intramolecular hydrogen bonding, Whereas para nitro phenol shows inter moleculr hydrogen bonding.
In intermolecular hydrogen bonding association of molecules take place, but in intramolecular hydrogen bonding there is no such type of association between the molecules. Due to this reason para nitrophenol has higher boiling point than ortho nitro phenol.

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