Salicylic acid and acetic anhydride are synthesized with phosphoric acid to catalyze the reaction to make...
Salicylic acid and acetic anhydride are synthesized with phosphoric acid to catalyze the reaction to make acetylsalicylic acid (aspirin).
- How will you know if you have successfully synthesized acetylsalicylic acid?
- What compound will you have if you did NOT successfully synthesize acetylsalicylic acid, and how can you confirm it?
Homework Answers
* during the course of reaction; plot the single spot of product
formed during the reaction on TLC paper and then stand the paper
for some time in desired solvent. if the spot remains single this
suggest that product formed. and if single spot divided into two
spots then the product doesn't formed.
* if we don't successfully synthesise the acetyl salicylicacid then
the reactant remains as such in the reaction. and it can be confirm
by Thin layer chromatography(TLC).
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Salicylic acid and acetic anhydride are synthesized with
phosphoric acid to catalyze the reaction to make...
3. 0.69g of salicylic acid was reacted with 0.6g acetic anhydride in the presence of concentrated phosphoric acid...
3. 0.69g of salicylic acid was reacted with 0.6g acetic anhydride in the presence of concentrated phosphoric acid to yield 0.80g of acetyl salicylic acid (see below). Determine the limiting reagent and percent yield. C-CH OH COOH CH, COOH CHC Salicylic acid MW 138.12. mp 159C Acetic anhydride Acetylsalicylic acid M W 102.09. bp 140CMW 180.15. mp 128-1370 4. How do you account for the smell of vinegar when an old bottle of aspirin opened?
Aspirin can be synthesized in the lab by combining salicylic acid (C7H6O3) and acetic anhydride (C4H6O3)...
Aspirin can be synthesized in the lab by combining salicylic acid (C7H6O3) and acetic anhydride (C4H6O3) to form aspirin (C9H8O4) and acetic acid (C2H4O2).C2H4O2). The balanced equation for this reaction is C7H6O3+C4H6O3⟶C9H8O4+C2H4O2 A student started with 4.00 mL acetic anhydride (density=1.08 g/mL) and 2.07 g salicylic acid. The student synthesized 2.00 g of aspirin. Select the limiting reactant. acetic acid (C2H4O2) salicylic acid (C7H6O3) aspirin (C9H8O4) acetic anhydride (C4H6O3) Calculate the theoretical yield of aspirin (C9H8O4). theoretical yield: Calculate the...
1. Mass of salicylic acid (g) 2.0089 5.10ml & 2. Volume of acetic anhydride (mL) Limiting...
1. Mass of salicylic acid (g) 2.0089 5.10ml & 2. Volume of acetic anhydride (mL) Limiting reactant is (circle one): Salicylic Acid or Acetic Anhydride Calculation for Limiting Reactant: 3. Theoretical yield of aspirin (9) Calculation for Theoretical Yield of aspirin: 4. Mass of filter paper 0.3369 N 5. Mass of filter paper + aspirin 2.471g 6. Experimental Yield of aspirin (g) 7. Percent Yield Synthesis of Aspirin An early oral pain reliever, salicylic acid, was determined to cause stomach...
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...
In this lab you are synthesizing acetylsalicylic acid (ASA) from salicylic acid using acetic anhydride, with...
In this lab you are synthesizing acetylsalicylic acid (ASA) from salicylic acid using acetic anhydride, with phosphoric acid as a catalyst. If the amount of salicylic acid at the start of the reaction was 1.05 g, what is the theoretical yield of ASA in g? Assume acetic anhydride is in excess.
In the mechanism for formation of acetylsalicylic acid via reaction of salicylic acid with acetic anhydride,...
In the mechanism for formation of acetylsalicylic acid via reaction of salicylic acid with acetic anhydride, phosphoric acid acts as a catalyst by O cleaving an acetyl group from acetic anhydride via protonation of the bridging oxygen O neutralizing the hydroxide ion side product protonating the carbonyl oxygen in the acetic anhydride protonating the phenolic oxygen of salicylic acid Question 10 (3 points) What would be the predicted major product from the thermodynamically controlled dehydration of the following material OH
In this lab you are synthesizing acetylsalicylic acid (ASA) from salicylic acid using acetic anhydride, with...
In this lab you are synthesizing acetylsalicylic acid (ASA) from salicylic acid using acetic anhydride, with phosphoric acid as a catalyst. If the amount of salicylic acid at the start of the reaction was 1.05 g, what is the theoretical yield of ASA in g? Assume acetic anhydride is in excess. HINT: The structures of all the compounds you need are in the lab manual.
Experiment 2: Synthesis of Aspirin (Acetylsalicylic Acid ) 1. How many moles of salicylic acid are...
Experiment 2: Synthesis of Aspirin (Acetylsalicylic Acid ) 1. How many moles of salicylic acid are there in 1.0 grams of salicylic acid? 2. How many moles of acetic anhydride are there in 3 mL of acetic anhydride? 3. When 1.0g of salicylic acid and 3 mL of acetic anhydride react, DETERMINE which one is the limiting reactant (you can go to General Chemistry if you need help about limiting reagent)? 4. What is phosphoric acid used for in the...
Acetylsalicylic acid (aspirin) can be synthesized from salicylic acid and acetic acid in an acidic solution....
Acetylsalicylic acid (aspirin) can be synthesized from salicylic acid and acetic acid in an acidic solution. COOH COOH Сн,соон на + H20 H HC. O-H salicylic acid acetylsalicylic acid (aspirin) We were unable to transcribe this image
3. 0.69g of salicylic acid was reacted with 0.6g acetic anhydride in the presence of concentrated phosphoric acid to yield 0.80g of acetyl salicylic acid (see below). Determine the limiting reagent and percent yield. C-CH OH COOH CH, COOH CHC Salicylic acid MW 138.12. mp 159C Acetic anhydride Acetylsalicylic acid M W 102.09. bp 140CMW 180.15. mp 128-1370 4. How do you account for the smell of vinegar when an old bottle of aspirin opened?
1. Mass of salicylic acid (g) 2.0089 5.10ml & 2. Volume of acetic anhydride (mL) Limiting reactant is (circle one): Salicylic Acid or Acetic Anhydride Calculation for Limiting Reactant: 3. Theoretical yield of aspirin (9) Calculation for Theoretical Yield of aspirin: 4. Mass of filter paper 0.3369 N 5. Mass of filter paper + aspirin 2.471g 6. Experimental Yield of aspirin (g) 7. Percent Yield Synthesis of Aspirin An early oral pain reliever, salicylic acid, was determined to cause stomach...
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...
In the mechanism for formation of acetylsalicylic acid via reaction of salicylic acid with acetic anhydride, phosphoric acid acts as a catalyst by O cleaving an acetyl group from acetic anhydride via protonation of the bridging oxygen O neutralizing the hydroxide ion side product protonating the carbonyl oxygen in the acetic anhydride protonating the phenolic oxygen of salicylic acid Question 10 (3 points) What would be the predicted major product from the thermodynamically controlled dehydration of the following material OH
Acetylsalicylic acid (aspirin) can be synthesized from salicylic acid and acetic acid in an acidic solution. COOH COOH Сн,соон на + H20 H HC. O-H salicylic acid acetylsalicylic acid (aspirin) We were unable to transcribe this image
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