Homework Answers
Ans 1 :
The chemical name of aspirin is Acetyl salicylic acid and has a molecular formula of C9H8O4.
The aspirin is prepared from two compounds namely : salicylic acid (C7H6O3) and acetic anhydride (C4H6O3).
Acetic acid (C2H4O2) is formed in the reaction as a side product.
So the balanced chemical equation for the preparation of aspirin is given as :
C7H6O3 + C4H6O3 = C9H8O4 + C2H4O2
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orgo 2 ex.. Search References Mailings Review View Help 1. What is the balanced equation for...
PROCEDURE 1. Place a reaction tube into a 5-mL Erienmeyer and tare. Add between 0.275- 0.300g...
PROCEDURE 1. Place a reaction tube into a 5-mL Erienmeyer and tare. Add between 0.275- 0.300g of salicylic acid. Record on the data sheet. 2. Transfer the reaction tube and 5-ml Erienmeyer to the hood. Add a boiling chip, 2 drops of 85% phosphoric acid, and about 0.70 mL of acetic anhydride to the reaction tube. Mix well. 3. Place a 50-ml beaker containing about 20-mls of water on a hot plate or in the sand bath. Allow the water...
1) Which reactant, salicylic acid or acetic anhydride, is in excess? Show your work. 2) If you we...
1) Which reactant, salicylic acid or acetic anhydride, is in
excess? Show your work.
2) If you were to use 3.17 g of starting material, how much
product would you expect? Again, show your work.
3) Why is phosphoric acid added to the reaction?
4) A small amount of water is added at the end of the reaction
to react with the excess acetic anhydride. Show a balanced equation
for that reaction.
5) Explain the purpose of the FeCl3 test...
Preparation of Aspirin Name Class & Section PRE-LABORATORY ASSIGNMENT 1. What hazards should you be aware of wh...
Preparation of Aspirin Name Class & Section PRE-LABORATORY ASSIGNMENT 1. What hazards should you be aware of when working with the following chemicals? a. Acetic anhydride b. Concentrated sulfuric acid 2. Explain the following terms as they relate to this experiment. a. Catalyst b. Limiting reactant 3. Following the procedure described in this experiment, a student reacted 2.775 g of salicylic acid with 4.0 ml of acetic anhydride and recovered 2.986 g of aspirin. a. Calculate the number of moles...
use condensed structural formulas to write the balance equation for the reaction of salicylic acid with...
use condensed structural formulas to write the balance
equation for the reaction of salicylic acid with acetic
anhydride.
Use the models to demonstrate the reaction
use condensed structural formulas to write the balance
equation for the reaction of salicylic acid with methanol.
Use the models to demonstrate the reaction
Describe the appearance of aspirin product
REPORT SHEET: ASPIRIN Name Partner(s) Date Section Instructor A. Molecular models Use condensed Ne condensed structural formulas to write the balanced equation for the reaction...
1. What two functional groups are found in salicylic acid? 2. For the formation of aspirin,...
1. What two functional groups are found in salicylic acid? 2. For the formation of aspirin, salicylic acid is acting as an _ acetic anhydride as a and 3. Where should you dispose of acetic anhydride and concentrated sulfuric acid? 4. The purity of your sample is determined by testing it with ferric chloride. What should you observe if your sample is pure?
please help Mustrates treat all types of ilnesses. Background Aspirin is a prodrug of salicylic acid,...
please help
Mustrates treat all types of ilnesses. Background Aspirin is a prodrug of salicylic acid, the actual active drug. A compound related to salicylic acid, salicin, was first isolated from willow bark in the mid 1700's, but willow-bark extract was used by the andient Greeks as a treatment for pain and fever. Salicylic acid (and many related phenols) are very hard on your Ho stomach, but when esterified, as aspirin is, they are much better tolerated. Simple esters are...
QUESTIONS 1. Why does methyl benzoate dissolve in concentrated sulfuric acid? 2. What is the EQUATION...
QUESTIONS 1. Why does methyl benzoate dissolve in concentrated sulfuric acid? 2. What is the EQUATION for the reaction between concentrated nitric and sulfuric acids? 3. What is the DOT STRUCTURE for NO,"? 4. What is the MECHANISM for the formation of m-nitromethylbenzoate? 5. WHY does reaction occur at the META position only? 6. What is the PURITY of the m-nitromethylbenzoate recovered based on its melting range?
someone help me with these 7 questions add a drop of iodine solution. If starch is present, I Wl iodine. The starch...
someone help me with these 7 questions
add a drop of iodine solution. If starch is present, I Wl iodine. The starch-iodine complex is deep blue-violet. Repeat this test with a com- mercial aspirin tablet and with the acetylsalicylic acid prepared in this experiment O N S at is the purpose of the concentrated phosphoric acid used in the first step? What would happen if the phosphoric acid were left out? 2. 1. Wh 3. If you used 250 mg...
1. [05 pts.] Draw the chemical equation for preparation of Aspirin. (No mechanism) 2. [15 pts.)...
1. [05 pts.] Draw the chemical equation for preparation of Aspirin. (No mechanism) 2. [15 pts.) Show the detailed mechanism movement of electrons. for reaction. Show all arrow to indicate 3. [09 pts.] Briefly explain the roles of Salicylic acid, Acetic anhydride and phosphoric acid in the reaction. 4. [05 pts.] What type of reaction is preparation of Aspirin? 5. [06 pts.] Briefly describe esterification and give an example using Acyl chloride as one of the reactants.
PRELAB EXERCISE EXPERIMENT 21 Synthesis of Aspirin (Acetylsalicylic Acid) 1. What is the purpose of sulfuric...
PRELAB EXERCISE EXPERIMENT 21 Synthesis of Aspirin (Acetylsalicylic Acid) What is the purpose of sulfuric acid or phosphoric acid used in the acetylation reaction? Use equations to explain this purpose. The procedure calls for cautious addition of water to the reaction mixture while it is still hot. What purpose does the addition of water serve and why should the addition be done while the reaction mixture is hot? Provide an equation for the reaction involved.Using the quantities of salicylic acid and acetic anhydride...
PROCEDURE 1. Place a reaction tube into a 5-mL Erienmeyer and tare. Add between 0.275- 0.300g of salicylic acid. Record on the data sheet. 2. Transfer the reaction tube and 5-ml Erienmeyer to the hood. Add a boiling chip, 2 drops of 85% phosphoric acid, and about 0.70 mL of acetic anhydride to the reaction tube. Mix well. 3. Place a 50-ml beaker containing about 20-mls of water on a hot plate or in the sand bath. Allow the water...
1) Which reactant, salicylic acid or acetic anhydride, is in
excess? Show your work.
2) If you were to use 3.17 g of starting material, how much
product would you expect? Again, show your work.
3) Why is phosphoric acid added to the reaction?
4) A small amount of water is added at the end of the reaction
to react with the excess acetic anhydride. Show a balanced equation
for that reaction.
5) Explain the purpose of the FeCl3 test...
Preparation of Aspirin Name Class & Section PRE-LABORATORY ASSIGNMENT 1. What hazards should you be aware of when working with the following chemicals? a. Acetic anhydride b. Concentrated sulfuric acid 2. Explain the following terms as they relate to this experiment. a. Catalyst b. Limiting reactant 3. Following the procedure described in this experiment, a student reacted 2.775 g of salicylic acid with 4.0 ml of acetic anhydride and recovered 2.986 g of aspirin. a. Calculate the number of moles...
use condensed structural formulas to write the balance
equation for the reaction of salicylic acid with acetic
anhydride.
Use the models to demonstrate the reaction
use condensed structural formulas to write the balance
equation for the reaction of salicylic acid with methanol.
Use the models to demonstrate the reaction
Describe the appearance of aspirin product
REPORT SHEET: ASPIRIN Name Partner(s) Date Section Instructor A. Molecular models Use condensed Ne condensed structural formulas to write the balanced equation for the reaction...
1. What two functional groups are found in salicylic acid? 2. For the formation of aspirin, salicylic acid is acting as an _ acetic anhydride as a and 3. Where should you dispose of acetic anhydride and concentrated sulfuric acid? 4. The purity of your sample is determined by testing it with ferric chloride. What should you observe if your sample is pure?
please help
Mustrates treat all types of ilnesses. Background Aspirin is a prodrug of salicylic acid, the actual active drug. A compound related to salicylic acid, salicin, was first isolated from willow bark in the mid 1700's, but willow-bark extract was used by the andient Greeks as a treatment for pain and fever. Salicylic acid (and many related phenols) are very hard on your Ho stomach, but when esterified, as aspirin is, they are much better tolerated. Simple esters are...
QUESTIONS 1. Why does methyl benzoate dissolve in concentrated sulfuric acid? 2. What is the EQUATION for the reaction between concentrated nitric and sulfuric acids? 3. What is the DOT STRUCTURE for NO,"? 4. What is the MECHANISM for the formation of m-nitromethylbenzoate? 5. WHY does reaction occur at the META position only? 6. What is the PURITY of the m-nitromethylbenzoate recovered based on its melting range?
someone help me with these 7 questions
add a drop of iodine solution. If starch is present, I Wl iodine. The starch-iodine complex is deep blue-violet. Repeat this test with a com- mercial aspirin tablet and with the acetylsalicylic acid prepared in this experiment O N S at is the purpose of the concentrated phosphoric acid used in the first step? What would happen if the phosphoric acid were left out? 2. 1. Wh 3. If you used 250 mg...
1. [05 pts.] Draw the chemical equation for preparation of Aspirin. (No mechanism) 2. [15 pts.) Show the detailed mechanism movement of electrons. for reaction. Show all arrow to indicate 3. [09 pts.] Briefly explain the roles of Salicylic acid, Acetic anhydride and phosphoric acid in the reaction. 4. [05 pts.] What type of reaction is preparation of Aspirin? 5. [06 pts.] Briefly describe esterification and give an example using Acyl chloride as one of the reactants.
PRELAB EXERCISE EXPERIMENT 21 Synthesis of Aspirin (Acetylsalicylic Acid) What is the purpose of sulfuric acid or phosphoric acid used in the acetylation reaction? Use equations to explain this purpose. The procedure calls for cautious addition of water to the reaction mixture while it is still hot. What purpose does the addition of water serve and why should the addition be done while the reaction mixture is hot? Provide an equation for the reaction involved.Using the quantities of salicylic acid and acetic anhydride...
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