CH3-C-OH Acetylsalicylic acid commonly known as Aspirin is used inflammation, and acts as a blood thinning agent. A group of STEM students experimented technique. The following are the initial materials for the experiment: 5.00 g of pure salicylic acid, 7.14 g of acetic anhydride and 8 drops concentrated sulfuric acid as catalyst. After successful synthesis, the group was able to collect 5.25 grams of Aspirin. (Atomic weights: C= 12 amu; H = 1 amu; O= 16 amu; density acetic anhydride = 1.08 g/mL) to treat fever, on the synthesis of this compound using recrystallization Chemical reaction involved: он C-CH3 -CH3 c-OH c-CH3 CH3-C-OH C-OH Acetic anhydride Acetylsalicylic acid (C 9H3O4) Salicylic acid Acetic Acid (C7H603) (C 4H6O3) (C 2H402) What is the theoretical yield of Aspirin in the synthesis experiment? O 2.17 g 6.52 g 12.6 g 13.34 g None of the above

CH3-C-OH Acetylsalicylic acid commonly known as Aspirin is used inflammation, and acts as a blood thinning agent. A group of STEM students experimented technique. The following are the initial materials for the experiment: 5.00 g of pure salicylic acid, 7.14 g of acetic anhydride and 8 drops concentrated sulfuric acid as catalyst. After successful synthesis, the group was able to collect 5.25 grams of Aspirin. (Atomic weights: C= 12 amu; H = 1 amu; O= 16 amu; density acetic anhydride = 1.08 g/mL) to treat fever, on the synthesis of this compound using recrystallization Chemical reaction involved: он C-CH3 -CH3 c-OH c-CH3 CH3-C-OH C-OH Acetic anhydride Acetylsalicylic acid (C 9H3O4) Salicylic acid Acetic Acid (C7H603) (C 4H6O3) (C 2H402) What is the theoretical yield of Aspirin in the synthesis experiment? O 2.17 g 6.52 g 12.6 g 13.34 g None of the above

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter13: Isolation Of Eugenol From Clov

Section: Chapter Questions

Problem 9Q

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In the industrial synthesis of aspirin, 200 kg of salicyclic acid, C7H6O3 and 150 kg of acetic anhydride (CH3CO)2O, form acetylsalicylic acid, C9H8O4, (aspirin) and acetic acid, C2H4O2. In a manufacturing process, 200 kg of aspirin are produced from 200 kg of impure salicyclic acid and 150 kg of acetic anhydride. The salicylic acid is the limiting reagent. Calculate the purity of the salicyclic acid. How many kg of excess reagent are left over, assuming there are no side reactions between the impurities in the limiting reagent and the excess reagent?
A 0.2500-g of dry CaCO3 was completely dissolved into a solution of 5-mL conc. HCl and 50-mL distilled water in an erlemeyer flask. The resulting solution was boiled for 5 minutes to expel CO2 from the reaction, and then it was cooled to room temperature and the solution was transferred in a 500-mL volumetric flask filled to volume by rinsing the erlenmeyer flask and combining all the washings to fill the mark. A 5.0-mL aliquot of the CaCl2 solution was taken from the orignal solution and was transferred into an erlenmeyer flask with 10-mL NH3 buffer, 20-mL distilled water, and 5 gtts of EBT. The solution consumed 4.96 mL of an EDTA solution. MW: CaCO3 = 100.1 Compute for the N EDTA solution. 0.0053 N 0.0531 N 0.5313 N None of the choices
Using the percent purity calculations, determine the percent yield of synthesis of aspirin. Part I Synthesis of Aspirin Mass of salicylic acid used (g) 2.029g Volume of acetic anhydride used (mL) 5ml Mass of acetic anhydride used (vol. × 1.08 g/mL) 5.4g Mass of aspirin synthesized (g) 3.256g Part II Melting Temperature Data Melting temperature (°C) 133°C Part III Salicylic Acid Standard Stock Solution Initial mass of salicylic acid (g) 0.210g Moles of salicylic acid (mol) 0.0147 mol Initial molarity of salicylic acid (M) 0.724 M Part III Beer’s Law Data for Salicylic Acid Standard Solutions Trial Concentration (M) Absorbance Water (mL) 1 10 0.301 0 2 7.5 0.219 2.5 3 5.0 0.163 5.0 4 2.5 0.074 7.5 Best-fit line equation for the salicylic acid standards Test of the Purity of the Synthesized Aspirin Initial mass of aliquot of product (g)…
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Solution and explanation for Percentage Yield and Theoritical Yield for this data (Synthesis of Aspirin) Salicylic acid - 1.950 g Labeled watch glass - 50.664 g Labeled watch glass & piece of filter paper together - 50.872 g filter paper only - 0.208 g Where the data is from: https://youtu.be/tLXljLxRZ0U Room temperature - filter paper, watch glass and aspirin - 53.088 g
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