7. What is the role of H3PO4 in aspirin synthesis?

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asked Oct 18, 2020 219k views

2 Answers

Oleksandr Albul · Answer 1 · 2020-10-20T08:22:55+0000

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.

AsemRadhwi · Answer 2 · 2020-10-24T06:08:52+0000

Answer:Aspirin is synthesized by esterification reaction of salicylic acid and acetic acid in the presence of phosphoric acid. Phosphoric acid acts as a catalyst and fastens the speed of reaction. It protonates the carboxyl group of salicylic acid and favors the esterficiation reaction.

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7. What is the role of H3PO4 in aspirin synthesis?

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