Consider the titrimetric determination of acetic acid (60.05 g/mol) in vinegar. Titration of a 5.00 mL vinegar sample requires 16.15 mL of 0.250 M NaOH to reach the phenolphthalein endpoint. Which is TRUE when the endpoint is over-run? Choose from the following choices below:

Introductory Chemistry: An Active Learning Approach
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Consider the titrimetric determination of acetic acid (60.05 g/mol) in vinegar. Titration of a 5.00 mL vinegar sample requires 16.15 mL of 0.250 M NaOH to reach the phenolphthalein endpoint. Which is TRUE when the endpoint is over-run? Choose from the following choices below:

A. Acetic acid is in excess.
B. Sodium hydroxide is in excess.
C. Acetic acid and sodium hydroxide are of equal amounts.
D. Cannot be determined
Transcribed Image Text:A. Acetic acid is in excess. B. Sodium hydroxide is in excess. C. Acetic acid and sodium hydroxide are of equal amounts. D. Cannot be determined
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