1. What is an antipyretic? 2. What is an analgesic? 3. What is the "active ingredient" in aspirin? Why is it not ingested directly?

World of Chemistry, 3rd edition
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ISBN:9781133109655
Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Chapter21: Biochemistry
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Aspirin Yield Lab
NAME:
6. How much aspirin is needed for Part B #1?
PRE-LAB
1. What is an antipyretic?
REPORT:
2. What is an analgesic?
A. Preparation of Aspirin DAY 1
3. What is the "active ingredient" in aspirin? Why is it not ingested
directly?
1. Mass of salicylic acid (g)
2. Mass of filter paper (g)
4. In this experiment, 2.00 g of salicylic acid reacts with an excess
amount of acetic anhydride. Calculate the theoretical yield of
acetylsalicylic acid for this synthesis.
3. Mass of dried filter paper
plus sample (g)
4. Theoretical yield of aspirin (g)
5. Experimental (actual) yield of aspirin (g)
5. A0.331 g sample of aspirin prepared in the laboratory was
dissolved in 95% ethanol and titrated to a phenolphthalein
endpoint with 16.7 ml of 0.107 M NAOH.
7. Volume of water used in the experiment
8. Mass of aspirin dissolved in the experiment
(see A7
a. Calculate the moles of acetylsalicylic acid in the aspirin
sample.
6. Experimental yield, corrected for solubility (g)
7. Percent yield (%)
b. What mass (g) of acetylsalicylic acid is present in the aspirin
sample?
Show calculations for the theoretical yield and the actual yield of aspirin here. Label ea
circle your answers.
Calculate the percent purity of the aspirin sample.
C.
age 1 of 4 454 words
P Type here to search
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Transcribed Image Text:ipboard Font Paragraph Styles Aspirin Yield Lab NAME: 6. How much aspirin is needed for Part B #1? PRE-LAB 1. What is an antipyretic? REPORT: 2. What is an analgesic? A. Preparation of Aspirin DAY 1 3. What is the "active ingredient" in aspirin? Why is it not ingested directly? 1. Mass of salicylic acid (g) 2. Mass of filter paper (g) 4. In this experiment, 2.00 g of salicylic acid reacts with an excess amount of acetic anhydride. Calculate the theoretical yield of acetylsalicylic acid for this synthesis. 3. Mass of dried filter paper plus sample (g) 4. Theoretical yield of aspirin (g) 5. Experimental (actual) yield of aspirin (g) 5. A0.331 g sample of aspirin prepared in the laboratory was dissolved in 95% ethanol and titrated to a phenolphthalein endpoint with 16.7 ml of 0.107 M NAOH. 7. Volume of water used in the experiment 8. Mass of aspirin dissolved in the experiment (see A7 a. Calculate the moles of acetylsalicylic acid in the aspirin sample. 6. Experimental yield, corrected for solubility (g) 7. Percent yield (%) b. What mass (g) of acetylsalicylic acid is present in the aspirin sample? Show calculations for the theoretical yield and the actual yield of aspirin here. Label ea circle your answers. Calculate the percent purity of the aspirin sample. C. age 1 of 4 454 words P Type here to search w] (? へ 口 hp
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