Procedure pH Probe Calibration 1. Choose Calibrate from the Sensors menu. Select pH and tap Calibrate Now. 2. Rinse the tip of the electrode in DI water and dry it. 3. Place the electrode into one of the buffer solutions. When the reading displayed on the LabQuest stabilizes, enter the pH of the buffer and tap Keep KEEP 4. Rinse and dry the electrode and place it into a second buffer solution. When the reading displayed on the LabQuest stabilizes, enter the pH of the buffer and click tap KEEP 5. Rinse and dry the electrode. It is now ready to use. Part A – Determining the Acid Ionization Constant for Acetic Acid Solution 1 6. Take a 30.0 mL sample of 1.0 M HOAC and place it in a beaker. Using a pH meter, measure the pH of the solution and record it in your lab notebook. 7. Add three drops of Universal Indicator to the solution. Using the color chart provided, estimate the pH of the solution. Record the color and estimated pH in your lab notebook. Solution 2 8. Take a 30.0 mL sample of 0.1 M HOÁC and place it in a beaker. Using a pH meter, measure the pH of the solution and record it in your lab notebook. 9. Add three drops of Universal Indicator to the solution. Record the color and estimated pH in your lab notebook. Solution 3 10. Add 24.0 mL of 1.0 M NaOAc to 10.0 mL of 1.0 M HOAC in a beaker and mix well. Using a pH meter, measure the pH of the solution and record it in your lab notebook. 11. Add three drops of Universal Indicator to the solution. Record the color and estimated pH in your lab notebook.
Procedure pH Probe Calibration 1. Choose Calibrate from the Sensors menu. Select pH and tap Calibrate Now. 2. Rinse the tip of the electrode in DI water and dry it. 3. Place the electrode into one of the buffer solutions. When the reading displayed on the LabQuest stabilizes, enter the pH of the buffer and tap Keep KEEP 4. Rinse and dry the electrode and place it into a second buffer solution. When the reading displayed on the LabQuest stabilizes, enter the pH of the buffer and click tap KEEP 5. Rinse and dry the electrode. It is now ready to use. Part A – Determining the Acid Ionization Constant for Acetic Acid Solution 1 6. Take a 30.0 mL sample of 1.0 M HOAC and place it in a beaker. Using a pH meter, measure the pH of the solution and record it in your lab notebook. 7. Add three drops of Universal Indicator to the solution. Using the color chart provided, estimate the pH of the solution. Record the color and estimated pH in your lab notebook. Solution 2 8. Take a 30.0 mL sample of 0.1 M HOÁC and place it in a beaker. Using a pH meter, measure the pH of the solution and record it in your lab notebook. 9. Add three drops of Universal Indicator to the solution. Record the color and estimated pH in your lab notebook. Solution 3 10. Add 24.0 mL of 1.0 M NaOAc to 10.0 mL of 1.0 M HOAC in a beaker and mix well. Using a pH meter, measure the pH of the solution and record it in your lab notebook. 11. Add three drops of Universal Indicator to the solution. Record the color and estimated pH in your lab notebook.
Chapter16: Applications Of Neutralization Titrations
Section: Chapter Questions
Problem 16.11QAP
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Question
100%
What will be the concentration of HOAc immediately after combining the solutions to make up Solution 3 (before equilibrium is established)?
- 0.42 M
- 0.29 M
- 1.0 M
- 0.71 M
Transcribed Image Text:Procedure
pH Probe Calibration
1. Choose Calibrate from the Sensors menu. Select pH and tap Calibrate Now.
2. Rinse the tip of the electrode in DI water and dry it.
3. Place the electrode into one of the buffer solutions. When the reading displayed on the LabQuest stabilizes,
enter the pH of the buffer and tap Keep
KEEP
4. Rinse and dry the electrode and place it into a second buffer solution. When the reading displayed on the
LabQuest stabilizes, enter the pH of the buffer and click tap
KEEP
5. Rinse and dry the electrode. It is now ready to use.
Part A – Determining the Acid Ionization Constant for Acetic Acid
Solution 1
6. Take a 30.0 mL sample of 1.0 M HOAC and place it in a beaker. Using a pH meter, measure the pH of the
solution and record it in your lab notebook.
7. Add three drops of Universal Indicator to the solution. Using the color chart provided, estimate the pH of
the solution. Record the color and estimated pH in your lab notebook.
Solution 2
8. Take a 30.0 mL sample of 0.1 M HOÁC and place it in a beaker. Using a pH meter, measure the pH of the
solution and record it in your lab notebook.
9. Add three drops of Universal Indicator to the solution. Record the color and estimated pH in your lab
notebook.
Solution 3
10. Add 24.0 mL of 1.0 M NaOAc to 10.0 mL of 1.0 M HOAC in a beaker and mix well. Using a pH meter,
measure the pH of the solution and record it in your lab notebook.
11. Add three drops of Universal Indicator to the solution. Record the color and estimated pH in your lab
notebook.
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