Question

what is the action of acetic anhydride on salicyclic acid


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Answer 1

Answer:

To prepare aspirin, salicylic acid is reacted with an excess of acetic anhydride. A small amount of a strong acid is used as a catalyst which speeds up the reaction. In this experiment, phosphoric acid will be used as the catalyst. The excess acetic acid will be quenched with the addition of water

Explanation:

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Answer 2

Sulphuric acid is the action of acetic anhydride on salicyclic acid

Explanation:

Aspirin is made from salicylic acid by an acetylation process in an acidic environment. In the presence of a few drops of strong sulphuric acid, salicylic acid reacts with acetic anhydride to create aspirin and a molecule of acetic acid.

Salicylic acid reacts with acetic acid in the presence of an acid catalyst to produce aspirin. The salicylic acid's phenol group creates an ester with the acetic acid's carboxyl group.

Nature of the reaction between salicylic acid and acetic anhydride:

• The traditional esterification process of salicylic acid with acetic anhydride is used to make aspirin in the lab.
• The $OH-$group of salicylic acid reacts with the $COOH-$group of acetic anhydride to form an ester bond.