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NTA Abhyas NEET2020ChemistryIonic EquilibriumPractice

The solubility of P b ( O H ) 2 in pure water is 20 3 × 1 0 - 6 M . Calculate concentration of O H - ion in a buffer solution of P H = 8 .

Options

  1. A20 3 × 1 0 - 6 M
  2. B10 3 × 1 0 - 6 M
  3. C1 0 - 6 M
  4. D2 × 1 0 - 6 M

Correct answer

C. 1 0 - 6 M

Step-by-step solution

As pH = 8 So [ H + ] = 1 0 - 8 [ O H - ] = K w [ H + ] [ O H - ] = 1 0 - 14 1 0 - 8 = 1 0 - 6

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