Ortho-Nitrophenol is less soluble in water than p- and m- Nitrophenols – InterviewSolution

1.	Ortho-Nitrophenol is less soluble in water than p- and m- Nitrophenols because :
Answer» o-Nitrophenol is more volatile than those of m- and p-ISOMERS. o-Nitrophenol SHOWS intramolecular H-bonding o-Nitrophenol shows intermolecular H-bonding Melting point of o-Nitrophenol is lower than those of m- and p-isomers. Solution :o-Nitrophenol shows intramolecular H-bonding and forms chelate. COMPOUNDS involved in chelation become non-polar. Consequently such compounds are soluble in non-polar solvents like ether, benzene ETC and are only sparingly soluble in WATER whereas meta and para isomers are more soluble in water & less soluble in non-polar solvents.

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