MATERIALS
80 mL 0.5 M sodium acetate solution 30 mL 0.1 M NaOH solution
80 mL 0.5 M acetic acid solution
30 mL 0.1 M HNO3 solution
260 mL DI water
PROCEDURE
The pH meter should already be calibrated at pH 4, 7 and 10. If your pH meter appears not to be
operating properly, notify your TA and they will recalibrate the meter. Please handle the pH probe
carefully; the tip is made of a fragile glass membrane. Be sure to rinse the probe with Dl water and
blot it dry with a Kimwipe whenever it is transferred from one solution to another.
Part I: Mixing Ratios
1. Set up two burets, one for acetic acid (HC2H3O2) and one for sodium acetate (NaCaHîO:)- Obtain about 100 mL of 0.5 M acetic acid and 100 mL of 0.5 M sodium acetate from the stock bottles.
2. Make the following mixtures and record the pH of the resulting solutions.