Assertion: O-nitrophenol
than
O-nitrophenol is less volatile
panitsaphenol.
Reasone There is intramolecular hydrogen
bonding in
O-ritrophenol and intermolecular
hydrogen bonding in
p-nitrophenol.
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O-Nitrophenol forms intramolecular H bond whereas molecules of P-Nitrophenol get associated through intermolecular H bond. During boiling, the strong intermolecular H bonding increases the boiling point but intramolecular H bonding cannot do so. Therefore, O-Nitrophenol is more steam volatile than P-Nitrophenol.
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