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Question: Answered & Verified by Expert

 Arrange the following labelled hydrogens in decreasing order of acidity: 

ChemistryGeneral Organic ChemistryJEE MainJEE Main 2020 (02 Sep Shift 2)
Options:
  • A  b>a>c>d
  • B c>b>a>d
  • C b>c>d>a
  • D  c>b>d>a
Solution:
2785 Upvotes Verified Answer
The correct answer is: b>c>d>a

Acidic strength∝ Stability of conjugate base General Order of acidic strength:
R-COOH>Ph-OH>R-C≡CH
'C' is more acidic due to-M effect of-NO2 .

Hence , order of acidic strength is: b>c>d>a

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