Q. The correct order of decreasing acidity of nitrophenols will be
A) m-nitrophenol > p-nitrophenol > o-nitrophenol
B) o-nitrophenol > m-nitrophenol > p-nitrophenol
C) p-nitrophenol > m-nitrophenol > o-nitrophenol
D) p-nitrophenol > o-nitrophenol > m-nitrophenol
Explanation
(d)
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Due to –I and –R influence, $NO_{2}$ in ortho-position should have raised the acidity to the maximum extent. But it is due to intramolecular H-bonding, ortho-nitrophenol is less acidic than para-nitrophenol.
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Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.