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WBJEE · Chemistry · General Organic Chemistry

The correct order of decreasing acidity of nitrophenols will be

  1. A m-Nitrophenol \( > \) p-Nitrophenol \( > \) o-Nitrophenol
  2. B o-Nitrophenol \( > \) m- Nitrophenol \( > \) p-Nitrophenol
  3. C p-Nitrophenol \( > \) m- Nitrophenol \( > \) o-Nitrophenol
  4. D p-Nitrophenol \( > \) o-nitrophenol \( > \) m-Nitrophenol
Verified Solution

Answer & Solution

Correct Answer

(D) p-Nitrophenol \( > \) o-nitrophenol \( > \) m-Nitrophenol

Step-by-step Solution

Detailed explanation

Hints: Due to \(-\mathrm{I}\) and \(-\mathrm{R}\) influence, \(\mathrm{NO}_2\) in ortho-postion should have raised the acidity to the maximum extent. But it is due to intramolecular \(\mathrm{H}\) - bonding, ortho-nitrophenol is less acidic than para - nitrophenol.