A student performs a titration by filling the titrator with 0.75 M NaOH, and filling a beaker with exactly 5.0 mL of vinegar and 2 drops of phenolphthalein. He adds NaOH to the beaker one drop at a time, swirling and observing after each drop until the color changes to a light pink color. He repeats this experiment two other times. He calculates the average volume of NaOH added is 4.5 mL. The density of vinegar is 1.006 g/mL, and the molar mass of CH3CO2H is 60.05 g/mol. Determine the percent concentration (mass percent) of acetic acid (CH3CO2H) in vinegar. % (omit the units)

A student performs a titration by filling the titrator with 0.75 M NaOH, and filling a beaker with exactly 5.0 mL of vinegar and 2 drops of phenolphthalein. He adds NaOH to the beaker one drop at a time, swirling and observing after each drop until the color changes to a light pink color. He repeats this experiment two other times. He calculates the average volume of NaOH added is 4.5 mL. The density of vinegar is 1.006 g/mL, and the molar mass of CH3CO2H is 60.05 g/mol. Determine the percent concentration (mass percent) of acetic acid (CH3CO2H) in vinegar. % (omit the units)

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter3: Chemical Reactions

Section: Chapter Questions

Problem 140QRT

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