Match List I with List II Choose the correct answer from the options given below:
- A-I, B-II, C-III, D-IV
- A-IV, B-I, C-II, D-III
- A-II, B-I, C-IV, D-III
- A-III, B-IV, C-I, D-II
Answer
(3) A-II, B-I, C-IV, D-III
Solution
Acidic strength: p-nitrophenol > m-nitrophenol > phenol > ethanol
⇒ pKa: p-nitrophenol (7.1) < m-nitrophenol (8.3) < phenol (10.0) < ethanol (15.9)
∵ –NO2 at para stabilises phenoxide by –R and –I, at meta only by –I; ethoxide has no resonance stabilisation.
∴ A-II, B-I, C-IV, D-III
Answer: (3)