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NTA Abhyas NEET2020ChemistryIonic EquilibriumPractice

The p H value of decinormal solution of N H 4 O H , which is 20 % ionized, is -

Options

  1. A13.30
  2. B14.70
  3. C12.30
  4. D12.95

Correct answer

C. 12.30

Step-by-step solution

OH − = 0.1 × 20 100 O H – = 0.1 × 0.2 = 2 × 10 –2 pOH= -log[OH - ] = 2- log2 p O H = 1.7 , p H = 14 – p O H = 14 - 1.7 = 12.3

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