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Out of o-nitrophenol and o-cresol which is more acidic?

Options

  1. Ao-Cresol is more acidic because it has a lower molecular weight than o-nitrophenol.
  2. Bo-nitrophenol is more acidic as the NO 2 group has an electron-withdrawing effect on phenol through resonance.
  3. Co-Nitrophenol is more acidic because it has a lower molecular weight than o-cresol.
  4. Do-Cresol is more acidic because it has a stronger electron-donating effect on the phenolic OH group compared t

Correct answer

B. o-nitrophenol is more acidic as the NO 2 group has an electron-withdrawing effect on phenol through resonance.

Step-by-step solution

Correct Option is : (B) o-nitrophenol is more acidic as the NO 2 group has an electron-withdrawing effect on phenol through resonance. So, it will stabilize the phenoxide ion formed on losing a proton whereas alkyl group (i.e. CH 3 ) has an electron-donating effect, which destabilizes the phenoxide ion.

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