Arrange the following labelled hydrogens in decreasing order of acidity: NO2 O – H C C – H COO H H – — JEE Mains Chemistry Past Papers Chemistry Question
Question
Arrange the following labelled hydrogens in decreasing order of acidity: NO2 O – H C C – H COO H H – O (a) (d) (c) (b) (A) b > c > d > a (B) c > b > a > d (C) b > a > c > d (D) c > b > d > a
Answer: A
💡 Solution & Explanation
Acidic strength Stability of conjugate base General order of acidic strength R–COOH > Ph–OH > R–CCH 'c' is more acidic due to –M effect of –NO2.
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