Quiz: Acetaminophen 1) If the theoretical yield is 6.5 grams of acetaminophen, w
ID: 1026615 • Letter: Q
Question
Quiz: Acetaminophen 1) If the theoretical yield is 6.5 grams of acetaminophen, what is the percent yield if 5.5 grams of acetaminophen are recovered? 2) What effect will impurity have on the MELTING POINT of the Acetaminophen you prepared in the lab? 3) What is the reactive functional group that will be utilized when acetic anhydride is reacted with the starting material P-amino phenol? Question options: C Phenol C Carboxylic Acid C Amide Amine C Acetaminophen 4) Aspirin is also a pain reliever like acetaminophen mentioned in our class. What is the functional group reacted with acetic anhydride. Question options: C Phenol C Benzoic acid C Hydroxyl C Amine C Amide 5) During the acetaminophen synthesis experiment, the purpose of the recrystallization step was to A) increase the % yield. C) decrease the % yield. B) improve the purity of aspirin product. D) waste valuable lab time.Explanation / Answer
1.
% yield = actual yield * 100 / theoretical yield = 5.5 * 100 / 6.5 = 84.6 %
2.
Presence of impurity will decrease the melting point of acetaminophen.
3.
Amine group will interact with acetic anhydride.
4.
Hydroxyl group will interact with acetic anhydride
5.
(B) To improve the purity of aspirin product.
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