Ortho-Nitrophenol is less soluble in water than p- and m-Nitrophenols because :

Engineering

Chemistry

Hydrogen Bonding

Question

o-Nitrophenol shows intramolecular H-bonding

o-Nitrophenol shows intermolecular H-bonding

o-Nitrophenol is more volatile in steam than those of m-and p-isomers.

Melting point of o-Nitrophenol is lower than those of m-and p-isomers.

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Due to intramolecular H-bonding its H-bonding with H₂O decreases.
$∴$ Solubility became 69 less.

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