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Ortho nitrophenol has lower Boiling point …

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Ortho nitrophenol has lower Boiling point than pnitrophenol.why....???

Posted by Saumya Kasaudhan 7 years, 3 months ago

CBSE > Class 12 > Chemistry

3 answers

Lekha Raj 7 years, 3 months ago

Boiling***

1Thank You

Lekha Raj 7 years, 3 months ago

Ortho nitrophenol is an intra-molecular hydrogen bonded compound whereas p nitrophenol is an inter-molecular hydrogen bonded compound.(INTRA MOLECULAR HYDROGEN BONDING MEANS HYDROGEN BOND FORMATION TAKES PLACE IN THE SAME MOLECULE B/W TWO FUNCTIONAL GROUPS.AND,INTER MOLECULAR HYDROGEN BONDING TAKES PLACE B/W TWO MOLECULES.THAT MEANS P NITROPHENOL IS STRONGLY BONDED THAN O NITROPHENOL.) This simply implies that p nirophenol needs more heat /energy to overcome from this intermolecular hydrogen bonding than o nitrophenol.Hence o nitrophenol has lower boilin point.

2Thank You

Sparsh Anand 7 years, 3 months ago

Due to less symmetry of o nitro phenol

0Thank You

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