Data below

pH Volume of base

3.20 20mL
3.47 22mL
3.82 24mL
4.07 26mL
4.30 28mL
4.46 30mL
4.70 32mL
4.91 34mL
5.34 36mL
5.88 38mL
8.70 40mL

1. Determine the concentrations of your unknown acid using your pH curves. Then calculate the average concentration and the standard deviation.