Exams › NEET › Chemistry

The correct order of decreasing acidity of nitrophenols will be:

1. \( m- \) nitrophenol \( >p- \) nitrophenol \( >o \) - nitrophenol
2. \( o \) - nitrophenol \( >m- \) nitrophenol \( >p- \) nitrophenol
3. \( p- \) nitrophenol \( >m- \) nitrophenol \( >o- \) nitrophenol
4. \( p- \) nitrophenol \( >o \) - nitrophenol \( >m- \) nitrophenol

Correct answer: \( o \) - nitrophenol \( >m- \) nitrophenol \( >p- \) nitrophenol

Solution

Ortho-nitrophenol is most acidic because the nitro group strongly withdraws electron density and can stabilize the conjugate base effectively. Meta lacks resonance stabilization, so it is less acidic than ortho, while para is least acidic here due to relative stabilization differences and intramolecular effects in the ortho isomer.

Related NEET Chemistry questions

• Among the following organic acids, the acid present in rancid butter is:
• A ketone has molar mass \( 86 . \) Which of the following cannot be IUPAC name of this ketone?
• An ideal gas is compressed in a closed container its U?
• Which of the following will change the value of the equilibrium constant for the reaction? \( N_{2}(g)+O_{2}(g) \leftrightharpoons 2 N O(g) \)
• Electronic configuration \( [\boldsymbol{K} \boldsymbol{r}] \boldsymbol{4} \boldsymbol{d}^{10} \) belongs to:
• Internal resistance of a battery cell increases with:

⚔️ Practice NEET Chemistry free + battle 1v1 →