Which of the following isomers is more volatile:
o-nitrophenol or p-nitrophenol?
o-nitrophenol forms intra-molecular hydrogen bond. On the other hand, p-nitrophenol is involved in stronger inter-molecular hydrogen bonding and hence, it has higher boiling point than o-nitrophenol. So, o-nitrophenol is more volatile than p-nitrophenol.
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