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NTA Abhyas NEET2020ChemistryIonic EquilibriumPractice

For two weak acids A and B, the ratio of their percent ionization is 4:9. The ratio of their K a would be-

Options

  1. A4:9
  2. B2:3
  3. C16:81
  4. D3:2

Correct answer

C. 16:81

Step-by-step solution

K a ∝ c α 2 ∴ K a 1 K a 2 = α 1 2 α 2 2 = 4 2 9 2 = 16 81

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