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JIPMER2013ChemistryIonic Equilibrium

p K_a of acetic acid and p K_b of ammonium hydroxide are 4.76 and 4.75 respectively. Calculate the pH of ammonium acetate solution.

Options

  1. A6.02
  2. B7.005
  3. C8
  4. D5.602

Correct answer

B. 7.005

Step-by-step solution

aligned pH =7+ & 1 2 [ p ^ K_a - p ^ K_b ] & =7+ 1 2 [4.76-4.75] & =7+ 1 2 0.01=7+0.005 & =7.005 aligned

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