0.94g of salicylic acid was reacted with excess acetic anhydride in the presence of concentrated phosphoric acid (catalyst) to yield 0.80g of acetyl salicylic acid (see below). Determine the percent yield of acetylsalicylic acid. Hint: Percent yield = actual yield/theortical yield * 100% OH O OH Salicylic acid Chemical Formula: C7H₂O3 Molecular Weight: 138.12 mp 159 °C + H3C CH3 acetic anhydride Chemical Formula: C4H6O3 Molecular Weight: 102.09 bp 140 °C H3PO4 H₂C OH Acetylsalicylic acid Chemical Formula: C9H₂O4 Molecular Weight: 180.16 mp 128-137 °C

0.94g of salicylic acid was reacted with excess acetic anhydride in the presence of concentrated phosphoric acid (catalyst) to yield 0.80g of acetyl salicylic acid (see below). Determine the percent yield of acetylsalicylic acid. Hint: Percent yield = actual yield/theortical yield * 100% OH O OH Salicylic acid Chemical Formula: C7H₂O3 Molecular Weight: 138.12 mp 159 °C + H3C CH3 acetic anhydride Chemical Formula: C4H6O3 Molecular Weight: 102.09 bp 140 °C H3PO4 H₂C OH Acetylsalicylic acid Chemical Formula: C9H₂O4 Molecular Weight: 180.16 mp 128-137 °C

Introduction to General, Organic and Biochemistry

11th Edition

ISBN:9781285869759

Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Chapter10: Organic Chemistry

Section: Chapter Questions

Problem 10.57P: Aspirin is prepared by the reaction of salicylic- acid with acetic anhydride as shown in the...

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Given the balanced reaction between salicylic acid (C7H6O3) and acetic anhydride (C4H6O3) to produce ASA or acetylsalicylic acid (C9H8O4) and acetic acid (C2H4O2), the following experimental materials are provided: 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 acetylsalicylic acid. (Atomic weight: C = 12 amu; H = 1 amu; O = 16 amu; density acetic anhydride = 1.08 g/mL). a. How much of the EXCESS reagent is left unused after the reaction? b. What is the PERCENTAGE in the experiment? c. What is the THEORETICAL yield of ASA in the experiment?
Given the balanced reaction between salicylic acid (C7H6O3) and acetic anhydride (C4H6O3) to produce ASA or acetylsalicylic acid (C9H8O4) and acetic acid (C2H4O2), the following experimental materials are provided: 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 acetylsalicylic acid. (Atomic weights: C= 12 amu; H = 1 amu; O= 16 amu; density acetic anhydride = 1.08 g/mL). What is the PERCENTAGE in the experiment?
Given the balanced reaction between salicylic acid (C7H6O3) and acetic anhydride (C4H6O3) to produce ASA or acetylsalicylic acid (C9H8O4) and acetic acid (C2H4O2), the following experimental materials are provided: 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 acetylsalicylic acid. (Atomic weights: C= 12 amu; H = 1 amu; O= 16 amu; density acetic anhydride = 1.08 g/mL). What is the THEORETICAL yield of ASA in the experiment?
2.5 grams of methyl orange was synthesized by using sulfanilic acid dihydrate, 3 g of anhydrous Na2CO3, 3.5 g of NaNO2, 12 mL of HCl and 6 mL of N,N-dimethylaniline and other necessary chemicals. Write down all the reaction steps and calculate the % yield of methyl orange synthesized
Given the balanced reaction between salicylic acid (C7H603) and acetic anhydride (C4H603) to produce ASA or acetylsalicylic acid (C9H804) and acetic acid (C2H4O2), the following experimental materials are provided: 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 acetylsalicylic acid. (Atomic weights: C= 12 amu; H = 1 amu; O= 16 amu; density acetic anhydride = 1.08 g/mL). How much of the EXCESS reagent is left unused after the reaction? O 0.37 g O 1.31 g O 3.45 g O 3.69 g O None of the above %3D
Acetylsalicylic acid (aspirin) can be synthesized by combining salicylic acid and acetic acid through a condensation reaction. The-OH group from phenol on the salicylic acid condenses with the carboxylic acid group of acetic acid forming acetylsalicylic acid OH OH HO CH₂ Condensation reaction
Can you calculate the theoretical acetylsalicylic acid, theoretical mass of acetylsalicylic acid,and % Yield (100% X B/A)
3) When acetic anhydride is dissolved in water, it forms acetic acid according to the balanced chemical reaction shown below. Calculate the theoretical yield (in grams of acetic acid, FW 60.05 g/mol) if 10.43 mL of acetic anhydride (FW 102.09 g/mol, d. 1.08 g/mL) is used. You can assume that the water is present in excess. H2O 2 HO, acetic anhydride acetic acid
1. Write the balanced chemical equation for the synthesis of acetylsalicylic acid and methyl salicylate. 2. Based on the amounts of reactants used in the synthesis, determine the limiting reagent of the synthesis of acetylsalicylic acid. Acetylsalicylic acid: Molar mass: 180.157 g/mol Density: 1.40 g/mL Salicylic acid: Molar mass: 138.121 g/mol Density: 1.44 g/mL Acetic anhydride: Molar mass: 102.09 g/mol Density: 1.08 g/mL
Aspirin is prepared by the reaction of salicylic- acid with acetic anhydride as shown in the following equation. The stoichiometry of the reaction is given in the equation. Acetic acid is a by-product of the reaction and must be separated and removed so that aspirin can then be sold as a pure product. How many grams of aspirin can be prepared from 120 grams of salicylic acid? Assume that there is an excess of acetic anhydride. (Chapter 4) Acetylsalieylic acid (Aspirin)
Cyclohexanone is oxidized to adipic acid with the following equation. Twenty gram (20g) of cyclohexanone is used and 15 g of product is obtained in this reaction. Calculate the percentage of yield of product in this reaction. * HO. HO. (0) (0) OH он
Given the balanced reaction between salicylic acid (C7H603) and acetic anhydride (C4H603) to produce ASA or acetylsalicylic acid (C9H804) and acetic acid (C2H402), the following experimental materials are provided: 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 acetylsalicylic acid. (Atomic weights: C= 12 amu; H = 1 amu; O= 16 amu; density acetic anhydride = 1.08 g/mL). What is the THEORETICAL yield of ASA in the experiment? O 2.17 g O 6.52 g O 12.60 g O 13.34 g O None of the above