A student wanted to determine the molar concentration of acetic acid in a commercial vinegar sample. He used a volumetric pipet to deliver 3.00 mL of vinegar to an Erlenmeyer flask, added about 30 mL of water and 3 drops of phenolphthalein indicator. He performed the titration and obtained the following data:
Flask Initial Volume (0.0997 M NaOH) mL Final Volume (0.0997 M NaOH) mL
1 50.00 25.10
2 25.10 0.35
3 50.00 25.00
a. Determine the molarity of acetic acid in the vinegar sample.
b. Convert molar concentration to % Acetic acid