(A) $p$-nitrophenol molecules are associated through intermolecular hydrogen bonding,which leads to a higher boiling point. In contrast,$o$-nitropheno

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$p$-nitrophenol has intermolecular hydrogen bonding and $o$-nitrophenol has intramolecular hydrogen bonding.

(A) $p$-nitrophenol molecules are associated through intermolecular hydrogen bonding,which leads to a higher boiling point. In contrast,$o$-nitrophenol molecules exhibit intramolecular hydrogen bonding,which restricts association between molecules,resulting in a lower boiling point.

Class 11 Chemistry Chemical Bonding and Molecular Structure Hydrogen bonding

Difficult

The boiling point of $p$-nitrophenol is higher than that of $o$-nitrophenol because:

A
$p$-nitrophenol has intermolecular hydrogen bonding and $o$-nitrophenol has intramolecular hydrogen bonding.
B
$p$-nitrophenol has intramolecular hydrogen bonding and $o$-nitrophenol has intermolecular hydrogen bonding.
C
$p$-nitrophenol is polar while $o$-nitrophenol is non-polar.
D
Van der Waals forces are stronger in $o$-nitrophenol.