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AIIMS2002ChemistryIonic Equilibrium

The pH of solution containing 0.10 M sodium acetate and 0.03 M acetic acid is ( p K_a . for . CH ₃ COOH =4.57 )

Options

  1. A4.09
  2. B6.09
  3. C5.09
  4. D7.09

Correct answer

C. 5.09

Step-by-step solution

According to Henderson's equation, aligned & pH = p K_a+ [ salt ] [ acid ] & CH ₃ COOH + NaOH CH ₃ COONa + H ₂ O aligned Putting the values, we get : aligned pH & =4.57+ 0.10 0.03 pH & =5.09 aligned

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