MCQ
$p-$ nitrophenol and $o-$ nitrophenol are separated by
- ACrystallisation
- BFractional crystallisation
- CDistillation
- ✓Steam distillation
✓
Answer
Correct option: D.
Steam distillation
d
(d) $o-$ nitro phenol has intra molecular hydrogen bonding, while $p-$ nitrophenol has intermolecular hydrogen bonding (comparitively stronger). Due to this reason, the boiling point of $o-$ nitrophenol is found quite less than that of $p-$ nitrophenol. Hence, $o-$ nitrophenol is steam volatile and can be separated from $p-$ nitrophenol by steam distillation.
(d) $o-$ nitro phenol has intra molecular hydrogen bonding, while $p-$ nitrophenol has intermolecular hydrogen bonding (comparitively stronger). Due to this reason, the boiling point of $o-$ nitrophenol is found quite less than that of $p-$ nitrophenol. Hence, $o-$ nitrophenol is steam volatile and can be separated from $p-$ nitrophenol by steam distillation.
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