Analysis
1 . Determine the concentrations of your unknown acid using your pH curves. Then calculate the average concentration and the standard deviation.
2 . Determine the pKa values from your pH curves. Then calculate the average Ka value and the standard deviation.
3 . Identify your unknown acid, and calculate a percent error based upon the literature value for Ka .
Conclusion
Write your standard deviation and percent error for Ka . Then list three possible sources of experimental error.

Data below
pH Volume of base
3 . 2 0 2 0 mL
3 . 4 7 2 2 mL
3 . 8 2 2 4 mL
4 . 0 7 2 6 mL
4 . 3 0 2 8 mL
4 . 4 6 3 0 mL
4 . 7 0 3 2 mL
4 . 9 1 3 4 mL
5 . 3 4 3 6 mL
5 . 8 8 3 8 mL
8 . 7 0 4 0 mL