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NTA Abhyas NEET2020ChemistryIonic EquilibriumPractice

The ratio of acid strength of H O C N and H C N is about Given K a of H O C N = 1.2 × 10 – 4 and K a of H C N = 4.2 × 10 – 10

Options

  1. A535 : 1
  2. B1 : 535
  3. C2.86 × 10 5 : 1
  4. D2.86 × 10 4 : 1

Correct answer

A. 535 : 1

Step-by-step solution

H + H O C N H + H C N = K a o f H O C N 1 / 2 K a o f H C N 1 / 2 = 1.2 × 1 0 - 4 4.2 × 1 0 - 10 1 / 2 = 535

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