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NEET2019ChemistryGeneral Organic ChemistryActual

The increasing order of p K_a values for the following carboxylic acids is (1) acetic acid (2) formic acid (3) benzoic acid (4) trichloroacetic acid

Options

  1. A(4) < (2) < (3) < (1)
  2. B(3) < (1) < (2) < (4)
  3. C(2) < (4) < (3) < (1)
  4. D(3) < (1) < (4) < (2)

Correct answer

A. (4) < (2) < (3) < (1)

Step-by-step solution

The order of acidic strength is : trichloroacetic acid > formic acid > benzoic acid > acetic acid. Hence, the increasing order of p K_a values is : trichloroacetic acid < formic acid < benzoic acid < acetic acid.

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