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I searched for this mechanism for along time & I finally found it at this site:
http://www.bioportfolio.com/search/reaction_mechanism_for_salicylic_acid_acetic_anhydride.html
at this site under the category of:
synthesis of aspirin
the file that will be downloaded contains the mechanism
hope I could helped you...
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoYou can use 85% phosphoric acid, or concentrated sulfuric acid. It depends on your method, but either works.
Wiki User
∙ 13y agoAspirin is an acid and becomes ionized in water, nothing other reaction.
Wiki User
∙ 12y agosubstitution reaction
esterification reaction
but not a condensation because no water release
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What is the purpose of phosphoric acid in the synthesis of aspirin?
to serve as a catalyst and speed up the reaction
What chemicals are needed to produce aspirin?
Salycylic acid and acetic anhydride with a sulphuric acid catalyst
Why is the catalyst made porous?
By making the pellets porous, you maximize the surface to volume ratio of the catalyst, which allows you to use less of it, but get the same effect.
What is activation energy How does a catalyst affect activation energy?
Activation energy is the energy required by a reaction for the reaction to occur. The catalyst lowers the activation energy, making it easier for the reaction to happen.Improvement:A catalyst don't lowers the activation energy. A catalyst creates a alternative route (*) for the same reaction with a lower activation energy.* = as a result of the interaction of the reagents with the catalyst.
What are the conditions of making polyethene?
generally a high pressure, a temperature at or above room temperature, and a catalyst
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.
What is the purpose of phosphoric acid in the synthesis of aspirin?
to serve as a catalyst and speed up the reaction
H2SO4 in aspirin?
Yes. ^ Well to improve on this, in simple terms. A catalyst is something that brings on the reaction, in this case the liquid catalyst can only contain a little amount of water otherwise side reactions will occur and this would impact (reduce) the yield of aspirin - not good, sulfuric acid is usually used because it is 98% pure, phosphoric acid can also be used but it is only about 85% pure, still OK. HCL in its most concentrated form is only 37% pure and there fore no good at all. In a shorter to the point answer, H2SO4 is a pure catalyst which will give you a close to accurate yield of aspirin.
A substance which helps a reaction to take place but that does not take an active part is a?
A substance which helps with chemical reactions, by making them possible at all, or reducing the effort required, is a catalyst.
What chemicals are needed to produce aspirin?
Salycylic acid and acetic anhydride with a sulphuric acid catalyst
What is the catalyst used for making sulphuric acid?
Vanadium pentaoxide
Why is the catalyst made porous?
By making the pellets porous, you maximize the surface to volume ratio of the catalyst, which allows you to use less of it, but get the same effect.
Why catalyst is a good investment for plastic making companies?
because it has the word cat in it
What is the alcohol when making aspirin is a salicylic acid or anhydride acid?
it is cocaine
Why isn't hydrochloric acid used as a catalyst for aspirin synthesis?
Hcl cl- is a strong nucleophile capible of substituting the oH group of the salicyclic acid,, my best guess
What is activation energy How does a catalyst affect activation energy?
Activation energy is the energy required by a reaction for the reaction to occur. The catalyst lowers the activation energy, making it easier for the reaction to happen.Improvement:A catalyst don't lowers the activation energy. A catalyst creates a alternative route (*) for the same reaction with a lower activation energy.* = as a result of the interaction of the reagents with the catalyst.
What substance increases the rate of a reaction but is not itself changed by the reaction?
It's called a catalyst. A catalyst is present during a chemical reaction but does not participate as a reactant or product. A catalyst lowers the reaction's activation energy, making the reaction easier to happen. In the equation for a chemical reaction, the catalyst's formula appears in small notation above the "yield" arrow (format won't let me show you an example.) An example of a catalyst is potassium iodide (KI) speeding up the decomposition of hydrogen peroxide (H2O2).
