In: Chemistry
Lactic acid is a common by-product of cellular respiration and is often said to cause the "burn" associated with strenuous activity. A 25.0 mL sample of 0.109 M lactic acid (HC3H5O3,
pKa = 3.86)
is titrated with 0.109 M NaOH solution. (Assume that all solutions are at 25°C.)
(a)
Calculate the pH after the addition of the following amounts of NaOH.
| 20.0 mL | |
| 24.0 mL | |
| 24.5 mL | |
| 24.9 mL | |
| 25.0 mL | |
| 25.1 mL | |
| 26.0 mL | |
| 28.0 mL | |
| 30.0 mL |