Procedure Preparation of Dilute Solution of Vinegar • Using a 10 mL pipette, transfer 10mL of vinegar into 100 mL volumetric flask.  • Dilute to mark of the volumetric flask using distilled water. B. Titration of Diluted Solution of Vinegar  • Transfer 25 mL of diluted solution to 250 mL Erlenmeyer flask.  • Add 0.5 mL phenolphthalein indicator. Set aside.  • Transfer 50mL of 0.110 M NaOH into a 50 mL burette.  • Titrate the diluted solution until the phenolphthalein endpoint (very faint pink).  • Record volume of NaOH used. Answer the question: What is the experimentally determined concentration of acetic acid in your vinegar solution: (Please give your answer to three significant figures.) ______ M Acetic Acid

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter16: Reactions Between Acids And Bases
Section: Chapter Questions
Problem 16.9QE
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Procedure Preparation of Dilute Solution of Vinegar • Using a 10 mL pipette, transfer 10mL of vinegar into 100 mL volumetric flask.  • Dilute to mark of the volumetric flask using distilled water. B. Titration of Diluted Solution of Vinegar  • Transfer 25 mL of diluted solution to 250 mL Erlenmeyer flask.  • Add 0.5 mL phenolphthalein indicator. Set aside.  • Transfer 50mL of 0.110 M NaOH into a 50 mL burette.  • Titrate the diluted solution until the phenolphthalein endpoint (very faint pink).  • Record volume of NaOH used. Answer the question: What is the experimentally determined concentration of acetic acid in your vinegar solution: (Please give your answer to three significant figures.) ______ M Acetic Acid
Determine the Concentration of Acetic Acid in Vinegar
In this lab, you will determine the concentration of acetic acid in vinegar using a 0.110 M NaOH standard solution and an acid-base indicator. phenolphthalein.
To perform this experiment you will first need to dilute the vinegar by one tenth of the original concentration. Next, add the indicator and then add NaOH slowly to the
diluted vinegar solution. Once all the acetic acid has reacted with the base, the first excess drop of NaOH will cause the indicator in the vinegar solution to turn pink.
Calculate the concentration of the acetic acid in your vinegar sample to three significant figures.
Now check your answer using the Virtual Lab.
Transcribed Image Text:Determine the Concentration of Acetic Acid in Vinegar In this lab, you will determine the concentration of acetic acid in vinegar using a 0.110 M NaOH standard solution and an acid-base indicator. phenolphthalein. To perform this experiment you will first need to dilute the vinegar by one tenth of the original concentration. Next, add the indicator and then add NaOH slowly to the diluted vinegar solution. Once all the acetic acid has reacted with the base, the first excess drop of NaOH will cause the indicator in the vinegar solution to turn pink. Calculate the concentration of the acetic acid in your vinegar sample to three significant figures. Now check your answer using the Virtual Lab.
Virtual File-
Lab
Stockroom
Name: 250 mL Flask
Volume: 45.500 mL
pH: 11.65
Information
Temperature: 25.00°C
25.00 deg
Edit-
M Acetic Acid
View -
Help -
+
|||
0
21.²
Distilled H₂O
2910.0 mL @ 25.0°C
Workbench 1
250 mL Flask
45.500 mL @25.0°C
50 mL Burette
30.000 mL @ 25.0°C
103
0.110 M NaOH
50.000 mL @25.0°C
EN
Acetic Acid in Vinegar
25 mL Pipette
0.0000 mL @ 25.0°C
100 mL Volumetric Flask
75.000 mL @ 25.0°C.
Phenolphthalein
99.500 mL @ 25.0°C
10 mL Pipette
0.0000 mL @ 25.0°C
Vinegar
90.000 mL @ 25.0°C
What is the experimentally determined concentration of acetic acid in your vinegar solution: (Please give your answer to three significant figures)
www
Transcribed Image Text:Virtual File- Lab Stockroom Name: 250 mL Flask Volume: 45.500 mL pH: 11.65 Information Temperature: 25.00°C 25.00 deg Edit- M Acetic Acid View - Help - + ||| 0 21.² Distilled H₂O 2910.0 mL @ 25.0°C Workbench 1 250 mL Flask 45.500 mL @25.0°C 50 mL Burette 30.000 mL @ 25.0°C 103 0.110 M NaOH 50.000 mL @25.0°C EN Acetic Acid in Vinegar 25 mL Pipette 0.0000 mL @ 25.0°C 100 mL Volumetric Flask 75.000 mL @ 25.0°C. Phenolphthalein 99.500 mL @ 25.0°C 10 mL Pipette 0.0000 mL @ 25.0°C Vinegar 90.000 mL @ 25.0°C What is the experimentally determined concentration of acetic acid in your vinegar solution: (Please give your answer to three significant figures) www
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