Experiment 17.docx - Madoussou Sanogo General Chemistry Lab...

  • SUNY, Albany
  • ACHM 125
  • Lab Report
  • madoussou
  • 2
  • 100% (13) 13 out of 13 people found this document helpful

This preview shows page 1 - 2 out of 2 pages.

Madoussou Sanogo General Chemistry Lab II Experiment 17 23 March 2018 Buffer Solutions Title: Determining if acetic acid/buffer solution can resist changes in pH. Objective : The objective of this experiment is to find the pK a of acetic acid by multiple methods and to determine if the acetic acid/ sodium acetate buffer solution can resist changes in pH. Variables : The independent variable is the pH of the solutions and the dependent variable is the pK a of acetic acid. Hypothesis : In this experiment using methods of titration with NaOH and acetic acid, we will find the pH of a buffer solution. The pK a of acetic acid will be found by measuring the pH of acetic acid, which should be roughly around 2.88. You can then use pH to find the concentration of H 3 O + using the equation [H 3 O + ] = 10 -pH which should be 1.3 x 10 -3 M. Since the concentration of acetate and hydronium are equal we can solve for K a by multiplying both concentrations and dividing it by the average molarity of acetic acid from the three trials. Then the pK

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture