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NEET2016Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Among the following, the correct order of acidity is:

Options

  1. AH C l O 3 < H C l O 4 < H C l O 2 < H C l O
  2. BH C l O < H C l O 2 < H C l O 3 < H C l O 4
  3. CH C l O 2 < H C l O < H C l O 3 < H C l O 4
  4. DH C l O 4 < H C l O 2 < H C l O < H C l O 3

Correct answer

B. H C l O < H C l O 2 < H C l O 3 < H C l O 4

Step-by-step solution

Acidic strength ∝ stability of conjugate base (Anion) stability of conjugate base ∝ less charge density ∝ more charge delocalisation ∝ resonating structure Oxidation state of chlorine ∝ Acidity of Oxo Acid. H C l O < H C l O 2 < H C l O 3 < H C l O 4 is the correct increasing order.

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