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If 1.5g of salicylic acid is heated with an excess of acetic anhydride, what is the theoretical yield of acetylsalicyclic acid?
Wiki User
∙ 14y ago
With 1,5 g of salicylic acid you can obtain theoretically 1,96 g aspirin (acetylsalicylic acid); but in the laboratory (or industry) I remember that the true yield of reaction is a little more than 90 %.
Wiki User
∙ 14y ago
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What are the compound names for salicylic acid and acetic anhydride?
Your question has the names right in it. Maybe it's the chemical formulas you want. In that case, salicylic acid is C7H6O3 and acetic anhydride is C4H6O3.
Is the reaction between salicylic acid and acetic anhydride exothermic?
A reaction between an alcohol and an anhydrid is usually exothermic, so I would say it is.
What would happen if the sulfuric acid was left out in the reaction between acetic anhydride and salicylic acid to prepare acetylsalicylic acid?
Because Salicylic Acid reacts with Acetic Anhydride in the presence of H2SO4 and CH3COOH to give Aspirin. The sulphuric acid does not react. If you measure the volume/weight of the acid before the reaction and after the reaction, there will be no change. Note:-You can also use Acetyl Chloride in the presence of phosphoric acid instead on Acetic Anhydride.
What would happen if the excess acetic anhydride is not removed in the reaction vessel?
If the excess acetic anhydride is not removed in the reaction vessel an unwanted reaction will occur. The acetic anhydride will react causing esterification.
Why add of little amount from acetic anhydride in synthesis of acetanilide?
Acetic anhydride and aniline are the reactants for the preparation of acetaanilide.
What are the compound names for salicylic acid and acetic anhydride?
Your question has the names right in it. Maybe it's the chemical formulas you want. In that case, salicylic acid is C7H6O3 and acetic anhydride is C4H6O3.
What are the impurity in aspirin synthesis?
The main impurties are probably the unreacted reactants. i.e salicylic acid and some acetic anhydride (ethanoic anhydride)
What percent salicylic acid in aspirin?
37.16% is the expected yield in the reaction of salicylic acid and acetic anhydride used to form aspirin.
What chemicals are needed to produce aspirin?
Salycylic acid and acetic anhydride with a sulphuric acid catalyst
Aspirin is made by the reaction of salicylic acid with acetic an hydride what is the theoretical yield of aspirin if 85.0 grams of salicylic acid is treated with excess acetic an hydride?
Since salicylic acid is being reacted with excess acetic anhydride, salicylic acid is the limiting reactant of the reaction. The balanced equation of the reaction of salicylic acid and acetic anhydride indicates that their is a 1:1:1:1 ratio between every reactant and product. Based on this, it can be concluded that the moles of salicylic acid, if reacted entirely, will yield an equivalent amount of moles of aspirin. To find the theoretical yield, you must know the molecular weight of aspirin and salicylic acid. First, the amount of moles of salicylic acid must be calculated by dividing the gram amount of salicylic acid, which is 85 grams, and dividing it by its molecular weight, which is 138.12 grams per mole.85.0/138.12= 0.615 moles of salicylic acidThis is the mole amount of salicylic acid as well as the theoretical mole amount of aspirin. To convert the mole amount of aspirin into grams, this figure be multiplied by the molecular weight of aspirin, which is 180.15980.615 x 180.1598 = 111 grams of aspirin (when rounded to 3 significant figures)
Is the reaction between salicylic acid and acetic anhydride exothermic?
A reaction between an alcohol and an anhydrid is usually exothermic, so I would say it is.
How do you know which OH group on salicylic acid reacts to form aspirin?
Aspirin is formed in a reaction between salicylic acid and acetic anhydride. In this reaction it is the phenolic alcohol group that reacts to form the aspirin.
What would happen if the sulfuric acid was left out in the reaction between acetic anhydride and salicylic acid to prepare acetylsalicylic acid?
Because Salicylic Acid reacts with Acetic Anhydride in the presence of H2SO4 and CH3COOH to give Aspirin. The sulphuric acid does not react. If you measure the volume/weight of the acid before the reaction and after the reaction, there will be no change. Note:-You can also use Acetyl Chloride in the presence of phosphoric acid instead on Acetic Anhydride.
What is an alternative reagent to ethanoic anhydride in the synthesis of aspirin from salicylic acid?
Synthesis of acetyl chloride via the reaction of acetic acid with sulphuric acid
What is the process of making aspirin?
Aspirin is made when salicylic acid and acetic anhydride is reacted in the presence of an acid catalyst such as H2SO4. Acetylsalicylic acid (aspirin) and acetic acid is formed. The reaction is an esterification reaction.
Is acetic anhydride an acid or a base?
An anhydride is not an acid and not a base.
What would happen if the excess acetic anhydride is not removed in the reaction vessel?
If the excess acetic anhydride is not removed in the reaction vessel an unwanted reaction will occur. The acetic anhydride will react causing esterification.
