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8.2 Carboxylic acids and their derivative — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry8.2 Carboxylic acids and their derivative1 Mark
MCQ
Which among the given acids has lowest  $pKa$  value
  • A
    Chloroacetic acid
  • B
    Bromoacetic acid
  • ✓
    Nitroacetic acid
  • D
    Cyanoacetic acid
✓

Answer

Correct option: C.
Nitroacetic acid
c
$(O_2N)- CH_2 -COOH$  ; $EWG$  increases Acidic strong  $-I$  effect strength.

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