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I-9
REPORT: EXPERIMENT I – BUFFER SOLUTIONS
Name ____________________________________
Section ___________ Date ___________________
Laboratory Instructor________________________
A.
Acetic Acid-Acetate Buffer Solutions
1.
Draw a schematic plot of your pH titration curve for acetic acid from Experiment G, and on it
identify the buffer region, as well as the point with the highest buffering capacity. Explain how a
buffer functions and the reason for selecting the above point. (1.2 marks)
2.
Compare the pH of the original buffer solution and the 1/10 diluted buffer solution. Using the K
a
relation or the Henderson-Hasselbalch equation, explain why the change in pH was so small
compared to the change in concentrations. (0.8 marks)
