Question

In: Chemistry

a)Determine the limiting reagent in aspirin synthesis given 3g of salicylic acid. b)Based on your answer,...

a)Determine the limiting reagent in aspirin synthesis given 3g of salicylic acid. b)Based on your answer, calculate the maximum weight of aspirin that you could prepare. c)As is true for most "organic" reactions the synthesis you do here is an equilibrium reaction. What steps could you take to improve the yield. d)The solubility of aspirin in ethanol is approximately 40g/100 mL at room temperature. If you had a 100% yield, how many milliliters of ethanol would you need to dissolve your product for the recrystallization step?

Solutions

Expert Solution

Hi, thanks for your question. We will be glad to answer you but it is missing an important data in this problem i.e. mass of acetic anhydre. However in order to help you we will give you an example in which acetic anhydre is the limiting reagent.

c)In order to improve the yield of reaction: protonation of acetic anhydre is important

d)

40g ------ 100mL

3.9095 g ----X

X = 3.9095 g/40g x 100 = 9.7738 mL ethanol


Related Solutions

Quantitiy of limiting reagent= 13.5 mmols salicylic acid Based on the quantity of the limiting reactant...
Quantitiy of limiting reagent= 13.5 mmols salicylic acid Based on the quantity of the limiting reactant used above, what is the theoretical yield of the aspirin (acetalsalicylic acid) product, in grams?
Lab Question - Synthesis of Aspirin Data values given: Mass of salicylic acid: 1.02 g Mass...
Lab Question - Synthesis of Aspirin Data values given: Mass of salicylic acid: 1.02 g Mass of 50 mL beaker plus dry product: 31.0558 g Mass of empty dry beaker: 29.5548 g Mass of product: 1.5010 g 1a) Show a complete calculation of how you calculated the number of moles of salicylic acid. Make sure your complete calculations are clear, complete, and correct. 1b) Theoretical number of moles of aspirin produced? 1c) Show a complete calculation of how to calculate...
Synthesis of aspirin lab when 5 grams of salicylic acid is used: how much of ACETIC...
Synthesis of aspirin lab when 5 grams of salicylic acid is used: how much of ACETIC acid in mL should be used ( I KNOW ACETIC ANHYDRIDE IS BETTER BUT I AM ASKING FOR ACETIC ACID)? how many drops of Phosphoric acid should be used? How long should the mixture be heated? What tempture should it be heated at? How much DI water should be added (one mL at a time)?
determine limiting reagent 16ml ethanol and 22 ml acetic acid
determine limiting reagent 16ml ethanol and 22 ml acetic acid
Calculate the theoretical and percent yield of terephthalic acid, based on PET being the limiting reagent....
Calculate the theoretical and percent yield of terephthalic acid, based on PET being the limiting reagent. MW terephthalic acid= 166.13 g/mol MW PET= 192 g/mol Mass of product = 0.76 g
The lab experiment is the synthesis of aspirin. The product will be acetylsalicylic acid (aspirin) and...
The lab experiment is the synthesis of aspirin. The product will be acetylsalicylic acid (aspirin) and the by-product will be acetic acid. How will you separate the by-product from the desired product? is it from recrystallization and then vacuum filtration?
1. In synthesizing Aspirin, acetylsalicylic acid, you will react 2.0 g of salicylic acid with 5...
1. In synthesizing Aspirin, acetylsalicylic acid, you will react 2.0 g of salicylic acid with 5 mL of acetic anhydride (d=1.08 g/mL). Write the balanced chemical equation to describe this transformation. Determine your limiting reactant and calculate the theoretical yield of your product. 2. What precautionary measures must you take in handling acetic anhydride and concentrated sulfuric acid (conc. H2SO4 is used as a catalyst in this synthesis)?
1. In synthesizing Aspirin, acetylsalicylic acid, you will react 2.0 g of salicylic acid with 5...
1. In synthesizing Aspirin, acetylsalicylic acid, you will react 2.0 g of salicylic acid with 5 mL of acetic anhydride (d=1.08 g/mL). Write the balanced chemical equation to describe this transformation. Determine your limiting reactant and calculate the theoretical yield of your product. 2. What precautionary measures must you take in handling acetic anhydride and concentrated sulfuric acid (conc. H2SO4 is used as a catalyst in this synthesis)?
aspirin can be produced from the reaction of salicylic acid and acetic anhydride. they react in...
aspirin can be produced from the reaction of salicylic acid and acetic anhydride. they react in a 1:1 molar ratio. A) use the aldrich catalog to find the molar masses of salicylic acid and acetic anhydride. B) if you react 0.111 g of salicylic acid with 0.200 g acetic anhydride, how much moles of each reactant do you have? which reactant is the limiting reagent? which is excess? if the molar mass of aspirin is 180.15 g/mol, what is the...
Calculate the theoretical yield of aspirin to be obtained when 2.0 g of salicylic acid and...
Calculate the theoretical yield of aspirin to be obtained when 2.0 g of salicylic acid and 5.0 mL of acetic anhydride (density = 1.08 g/mL) are mixed together. What is the limiting reagent?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT