I need all of the blanks in the table and the questions below it. It would also be helpful if it was shown how to do each problem since I need to show my work. In my lab manual it says that the pKa of acedic acid is 4.75, and the volume of vinegar is 21.05 mL. Please help me :) Name of Sample Vinegar Vinegar Sample 1 Vinegar Sample 2 Vinegar Sample 3 Initial pH Reading pH = 3.211 pH = 3.102 pH = 3.105 Initial Buret Reading 2.89 mL 3.00 mL 1.61 mL Midpoint pH Reading NOT NEEDED pH = 4.895 pH = 4.687 Midpoint Buret Reading NOT NEEDED 12.92 mL 9.50 mL Final pH Reading pH = 8.238 pH = 8.531 pH = 8.934 Final Buret Reading 20.12 mL 20.31 mL 19.00 mL Volume of NaOH Dispensed Calculated Molarity of Acetic Acid in the Vinegar Sample Volume NaOH Dispensed at Midpoint Reading NOT NEEDED Moles of NaOH Consumed at Midpoint Reading [A–] NOT NEEDED Moles of Acetic Acid Remaining at Midpoint [HA] NOT NEEDED Calculated pKa NOT NEEDED Average calculated molarity of acetic acid: Average acetic acid concentration expressed in percent by mass: Average value of pKa of acetic acid based on provided experimental data: Percent error for pKa of acetic acid:
I need all of the blanks in the table and the questions below it. It would also be helpful if it was shown how to do each problem since I need to show my work. In my lab manual it says that the pKa of acedic acid is 4.75, and the volume of vinegar is 21.05 mL. Please help me :)
|
Name of Sample Vinegar |
Vinegar Sample 1 |
Vinegar Sample 2 |
Vinegar Sample 3 |
|
Initial pH Reading |
pH = 3.211 |
pH = 3.102 |
pH = 3.105 |
|
Initial Buret Reading |
2.89 mL |
3.00 mL |
1.61 mL |
|
Midpoint pH Reading |
NOT NEEDED |
pH = 4.895 |
pH = 4.687 |
|
Midpoint Buret Reading |
NOT NEEDED |
12.92 mL |
9.50 mL |
|
Final pH Reading |
pH = 8.238 |
pH = 8.531 |
pH = 8.934 |
|
Final Buret Reading |
20.12 mL |
20.31 mL |
19.00 mL |
|
Volume of NaOH Dispensed |
|
|
|
|
Calculated Molarity of Acetic Acid in the Vinegar Sample |
|
|
|
|
Volume NaOH Dispensed at Midpoint Reading |
NOT NEEDED |
|
|
|
Moles of NaOH Consumed at Midpoint Reading [A–] |
NOT NEEDED |
|
|
|
Moles of Acetic Acid Remaining at Midpoint [HA] |
NOT NEEDED |
|
|
|
Calculated pKa |
NOT NEEDED |
|
|
Average calculated molarity of acetic acid:
Average acetic acid concentration expressed in percent by mass:
Average value of pKa of acetic acid based on provided experimental data:
Percent error for pKa of acetic acid:
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 3 images
