Q32 / 359 · NTA Abhyas (NEET) 2020 · Chemistry · General Organic Chemistry

Choose from the indicated protons, the one that is most acidic

Figure

  • A
    1
  • B
    2
  • C
    3
  • Correct answer
    D
    4

Solution

Figure
Deprotonation of hydrogen labelled 4 produces a conjugate base which has more stable resonating structure and a resonance structure in which negative charge is present on the electronegative oxygen atom. Therefore, hydrogen labelled 4 is most acidic.

Hence, the correct answer is option: 'D'.

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