Question:
Give a method to separate o-nitrophenol and p-nitrophenol. Explain the principle
involved.
Give a method to separate o-nitrophenol and p-nitrophenol. Explain the principle
involved.
Updated On: Jul 11, 2025
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Solution and Explanation
A method to separate o-nitrophenol and p-nitrophenol is by using the difference in their
solubility in alkaline solutions. When both compounds are treated with aqueous NaOH,
o-nitrophenol (ortho isomer) will form a water-soluble salt due to the hydroxyl group being
in a position to form a hydrogen bond with the base. On the other hand, p-nitrophenol (para
isomer) does not form a soluble salt and remains insoluble. The two compounds can then be
separated by filtration
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