Answer to Question #58701 in General Chemistry for Lenisha

Question

A 21.50 mL volume of 0.0950 M NaOH is required to reach the phenolphthalein endpoint in titration of a 3.15 g sample of vinegar. A) Calcuate the number of moles of CH3COOH in the vinegar sample. B) Calculate the mass of CH3COOH in the vinegar sample. C) Calculate the percent by mass CH3COOH in the vinegar sample. Assume the density of the vinegar is 1.00 g/mL.