A 0.9161 g sample which contained monoprotic lactic acid, C3H6O3, was dissolved in 75 mL of water and titrated to the equivalence point with 32.25 mL of a 0.1057 M NaOH solution.
A. How many moles of lactic acide were titrated? Was this a purse sample of lactic acid?
B. Was this a pure sample of lactic acid?
C. If the sample were not, calculate its percent purity.