,E | .. AaBbCcDdEe AaBbCcDdEe AaBbCcDcAaBbCo Normal No Spacing Heading 1 Headi R
ID: 577810 • Letter: #
Question
,E | .. AaBbCcDdEe AaBbCcDdEe AaBbCcDcAaBbCo Normal No Spacing Heading 1 Headi RD Lab 02: Separating and Identifying the components of "Panacetin" Results (2 points) Provide the % composition of each product in your mixture based on the initial mass of panacetin. This is based on the actual mass you obtained and the theoretical percentage of each component (not a range of values). I. Initial mass of Panacetin: 0.40119g Components obtained: Sucrose (0.0892g), Aspirin (0.0506g), Unknown is Acetanilide (0.1089g) Theoretical % of each component. Sucrose (6-14%), Aspirin (30-50%), Unknown (40-60%) . 2" (2 points) Calculate the % error for each product obtained. Discussion 4. (2 points) Explain why we select an aqueous sodium bicarbonate solution to extract aspirin from dichloromethane rather than water. 5. (2 points) Although acetanilide and phenacetin are not appreciably acidic acetaminophen (like aspirin) is a stronger acid than water. What problem would you encounter if the unknown component was acetaminophen rather than acetanilide or phenacetin, and you extracted the aspirin with 5% NaOH? Explain, giving chemical equations for any relevant reactions. Show your structures explicitly to illustrate this.Explanation / Answer
1) Initial mass of panacetin=0.4011g
% composition of product= (mass of product/Initial mass of panacetin)*100
% composition of sucrose=(0.0892g/0.4011g)*100=22.2%
% composition of aspirin=(0.0506/0.4011)*100=12.6%
% composition of acetanilide=(0.1089/0.4011)*100=27.1%
maximum Theoretical % yield of sucrose=14
percent error=(difference in value/actual value)*100=(22.2-14)/14*100=58.6%
2) maximum Theoretical % yield of aspirin=50%
percent error=(50-12.6)/50=74.8%
maximum Theoretical % yield of acetanilide=60%
percent error=(60-27.1)/60=54.8%
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.