Aspirin Synthesis General Chemistry I, CHEM 111AF Data Collection for Aspirin Synthesis Part I: Synthesis of Aspirin mass of salicylic acid (g): volume of acetic anhydride (ml): moles of salicylic acid: Theoretical Yield of acetylsalicylic acid (mol): Theoretical Yield of acetylsalicylic acid (g) Part II. Recrystallization of Aspirin mass of filter paper and watch glass: mass of dry product + filter paper and watch glass: mass of dry product: Percent Yield of dry product: Experiment 11 V09162019 10194g 2.00mL 3 7.380 x10 mol 42.58599 43-59539 1.0094g Post Laboratory Assignment Answer the following on a separate sheet of paper (or in your lab notebook, if you are using one). 1. Calculate the percent yield of your reaction. Explain why recrystallization may have lowered your yield. 2. Explain why acetic anhydride and acetic acid are unlikely to be an impurity in your solid aspirin, whereas unreacted salicylic acid is a more likely impurity. Examine the structure and reactivity of acetic anhydride, acetic acid, and salicylic acid. 3. What are some sources of error that might result in a percent yield that is higher than expected?
Aspirin Synthesis General Chemistry I, CHEM 111AF Data Collection for Aspirin Synthesis Part I: Synthesis of Aspirin mass of salicylic acid (g): volume of acetic anhydride (ml): moles of salicylic acid: Theoretical Yield of acetylsalicylic acid (mol): Theoretical Yield of acetylsalicylic acid (g) Part II. Recrystallization of Aspirin mass of filter paper and watch glass: mass of dry product + filter paper and watch glass: mass of dry product: Percent Yield of dry product: Experiment 11 V09162019 10194g 2.00mL 3 7.380 x10 mol 42.58599 43-59539 1.0094g Post Laboratory Assignment Answer the following on a separate sheet of paper (or in your lab notebook, if you are using one). 1. Calculate the percent yield of your reaction. Explain why recrystallization may have lowered your yield. 2. Explain why acetic anhydride and acetic acid are unlikely to be an impurity in your solid aspirin, whereas unreacted salicylic acid is a more likely impurity. Examine the structure and reactivity of acetic anhydride, acetic acid, and salicylic acid. 3. What are some sources of error that might result in a percent yield that is higher than expected?
Chemistry
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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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This is my data. Could you help me to find the theoretical yield of acetylsalicylic acid in moles and grams. Also Theoretical yield of dry product as well?
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Aspirin Synthesis
General Chemistry I, CHEM 111AF
Data Collection for Aspirin Synthesis
Part I: Synthesis of Aspirin
mass of salicylic acid (g):
volume of acetic anhydride (ml):
moles of salicylic acid:
Theoretical Yield of acetylsalicylic acid (mol):
Theoretical Yield of acetylsalicylic acid (g)
Part II. Recrystallization of Aspirin
mass of filter paper and watch glass:
mass of dry product + filter paper and watch glass:
mass of dry product:
Percent Yield of dry product:
Experiment 11
V09162019
101949
2.00mL
7.380 x10³ mol
42.58599
43.59539
1.00949
Post Laboratory Assignment
Answer the following on a separate sheet of paper (or in your lab notebook, if you are using one).
1. Calculate the percent yield of your reaction. Explain why recrystallization may have lowered your
yield.
2. Explain why acetic anhydride and acetic acid are unlikely to be an impurity in your solid aspirin,
whereas unreacted salicylic acid is a more likely impurity. Examine the structure and reactivity of
acetic anhydride, acetic acid, and salicylic acid.
3. What are some sources of error that might result in a percent yield that is higher than expected?
118
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