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NTA Abhyas NEET2020ChemistryIonic EquilibriumPractice

A buffer solution contains equal concentration of X - and H X . The k b for X - is 1 0 - 10 . The p H of the buffer solution is

Options

  1. A4
  2. B7
  3. C10
  4. D14

Correct answer

A. 4

Step-by-step solution

p O H = pK b + l o g [ s a l t ] [ b a s e ] p O H = 10 + l o g [ H X ] [ X - ] [ H X ] = [ X - ] L o g 1 = 0 pOH = 10 p H + pOH = p K w p H = 4 .

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