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NTA Abhyas NEET2020ChemistryIonic EquilibriumPractice

CH 3 NH 2 0.12 mole , pK b = 3.3 is added to 0.08 m o l e s of H C l and the solution is diluted to one litre, resulting p H of solution is:

Options

  1. A10.7
  2. B3.6
  3. C10.4
  4. D11.3

Correct answer

C. 10.4

Step-by-step solution

p O H = p K b + l o g C H 3 N H 3 + C H 3 N H 2 = 3.3 + l o g 0.08 0.04 = 3.6 ∴ p H = 10.4

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