Solution 6 16. Prepare a buffer solution by mixing 30.0 mL of 0.10 M HOẠC and 40.0 mL of 0.10 M NaOAc. Measure the pH of the resulting solution with the pH meter and record it in your lab notebook. 17. Add three drops of Universal Indicator to the solution. Record the color and estimated pH in your lab notebook. Solution 7 18. Divide the Solution 6 into three 20 mL aliquots. To the first aliquot, add 2.0 mL of 0.10 M HCI. Measure the pH of the resulting solution using the pH meter and record it in your lab notebook. Record the color and estimated pH. Solution 8 19. To the second aliquot of Solution 6, add 2.0 mL of 0.10 M NAOH. Measure the pH of the resulting solution using the pH and record it in your lab notebook. Record the color and estimated pH. Solution 9 20. Dilute the third aliquot of Solution 6 with an equal volume of deionized water (should be approximately 20 mL; adjust the volume of water as necessary). Measure the pH of the resulting solution using the pH meter and record it in your lab notebook. Record the color and estimated pH. Solution 10 21. Place 20.0 mL of deionized water into a beaker. Add three drops of Universal Indicator to the solution. Record the color and estimated pH in your lab notebook. 22. Add 2.0 mL of 0.10 M HCl to the beaker and swirl gently to mix. Measure the pH of the resulting solution using the pH meter and record it in your lab notebook. Record the color and estimated pH. Solution 11 23. Place 20.0 mL of deionized water into a beaker and add three drops of Universal Indicator. 24. Add 2.0 mL of 0.10 M NAOH to the beaker and swirl gently to mix. Measure the pH of the resulting solution using the pH meter and record it in your lab notebook. Record the color and estimated pH.

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Calculate the expected pH based on how the solution was prepared, again allowing for any dilution taking place. For Solutions 7 and 8, make sure to take into account the acid–base reaction that occurs when an acid or base is added to the buffer.

 

Solution 6
16. Prepare a buffer solution by mixing 30.0 mL of 0.10 M HOẠC and 40.0 mL of 0.10 M NaOAc. Measure
the pH of the resulting solution with the pH meter and record it in your lab notebook.
17. Add three drops of Universal Indicator to the solution. Record the color and estimated pH in your lab
notebook.
Solution 7
18. Divide the Solution 6 into three 20 mL aliquots. To the first aliquot, add 2.0 mL of 0.10 M HCI. Measure
the pH of the resulting solution using the pH meter and record it in your lab notebook. Record the color and
estimated pH.
Solution 8
19. To the second aliquot of Solution 6, add 2.0 mL of 0.10 M NAOH. Measure the pH of the resulting solution
using the pH
and record it in your lab notebook. Record the color and estimated pH.
Solution 9
20. Dilute the third aliquot of Solution 6 with an equal volume of deionized water (should be approximately
20 mL; adjust the volume of water as necessary). Measure the pH of the resulting solution using the pH
meter and record it in your lab notebook. Record the color and estimated pH.
Solution 10
21. Place 20.0 mL of deionized water into a beaker. Add three drops of Universal Indicator to the solution.
Record the color and estimated pH in your lab notebook.
22. Add 2.0 mL of 0.10 M HCl to the beaker and swirl gently to mix. Measure the pH of the resulting solution
using the pH meter and record it in your lab notebook. Record the color and estimated pH.
Solution 11
23. Place 20.0 mL of deionized water into a beaker and add three drops of Universal Indicator.
24. Add 2.0 mL of 0.10 M NAOH to the beaker and swirl gently to mix. Measure the pH of the resulting
solution using the pH meter and record it in your lab notebook. Record the color and estimated pH.
Transcribed Image Text:Solution 6 16. Prepare a buffer solution by mixing 30.0 mL of 0.10 M HOẠC and 40.0 mL of 0.10 M NaOAc. Measure the pH of the resulting solution with the pH meter and record it in your lab notebook. 17. Add three drops of Universal Indicator to the solution. Record the color and estimated pH in your lab notebook. Solution 7 18. Divide the Solution 6 into three 20 mL aliquots. To the first aliquot, add 2.0 mL of 0.10 M HCI. Measure the pH of the resulting solution using the pH meter and record it in your lab notebook. Record the color and estimated pH. Solution 8 19. To the second aliquot of Solution 6, add 2.0 mL of 0.10 M NAOH. Measure the pH of the resulting solution using the pH and record it in your lab notebook. Record the color and estimated pH. Solution 9 20. Dilute the third aliquot of Solution 6 with an equal volume of deionized water (should be approximately 20 mL; adjust the volume of water as necessary). Measure the pH of the resulting solution using the pH meter and record it in your lab notebook. Record the color and estimated pH. Solution 10 21. Place 20.0 mL of deionized water into a beaker. Add three drops of Universal Indicator to the solution. Record the color and estimated pH in your lab notebook. 22. Add 2.0 mL of 0.10 M HCl to the beaker and swirl gently to mix. Measure the pH of the resulting solution using the pH meter and record it in your lab notebook. Record the color and estimated pH. Solution 11 23. Place 20.0 mL of deionized water into a beaker and add three drops of Universal Indicator. 24. Add 2.0 mL of 0.10 M NAOH to the beaker and swirl gently to mix. Measure the pH of the resulting solution using the pH meter and record it in your lab notebook. Record the color and estimated pH.
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