For a buffer composed of 0.12 mol benzoic acid (C6H5COOH) and 0.20 mol sodium benzoate.  Calculate the pH Calculate the pH after 0.020 mol of HCl have been added. Calculate the pH after 0.020 mol of NaOH have been added.

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter17: Principles Of Chemical Reactivity: Other Aspects Of Aqueous Equilibria
Section: Chapter Questions
Problem 89GQ: A buffer solution is prepared by dissolving 1.50 g each of benzoic acid, C6H5CO2H, and sodium...
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 For a buffer composed of 0.12 mol benzoic acid (C6H5COOH) and 0.20 mol sodium benzoate. 

  1. Calculate the pH
  2. Calculate the pH after 0.020 mol of HCl have been added.
  3. Calculate the pH after 0.020 mol of NaOH have been added.
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