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AP EAMCET201822 Apr 2018Morning ShiftChemistryIonic EquilibriumActual

If the p K_a of acetic acid and p K_b of dimethylamine are 4.76 and 3.26 respectively, the pH of dimethyl ammonium acetate solution is

Options

  1. A7.75
  2. B6.75
  3. C7.0
  4. D8.5

Correct answer

A. 7.75

Step-by-step solution

aligned & aligned pH = & 7+ 1 2 [ p K_a- p K_b ] Here, p _a & =4.76, p K_b=3.26 & =7+ 1 2 [4.76-3.26] & =7+ 1 2 [1.50] & =7+0.75=7.75 aligned aligned

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