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4 answers

See the link below for the reaction.

The acetic anhydride splits into two acetic acids in the presence of a strong acid, so is a little tricky,, but the link explains it completely.

2006-10-29 12:53:26 · answer #1 · answered by Favoured 5 · 0 0

The closest I was able to get was the following:

2 C7H6O3 + 2 C4H6O3 ---> 3 C9H8O4

In the reactant side, I got 22 C, 24 H, 12 O.
In the product side, I got 27 C, 24 H, 12 O.

Play around this a little and you might come up with it. But there's a lot more to synthesizing aspirin. It's a long chemical process involving a Kolbe-Schmitt reaction.

Working with even and odd numbers on the same atom is difficult. If the chemical reaction you mentioned is true, you might have to use fractions to explain it, but sorry, I don't have that much time : )

2006-10-29 20:56:18 · answer #2 · answered by mindy15cbc 1 · 0 0

Aspirin is commercially synthesized using a two-step process. First, phenol (generally extracted from coal tar) is treated with a sodium base generating sodium phenoxide, which is then reacted with carbon dioxide under high temperature and pressure to yield salicylate, which is acidified, yielding salicylic acid. This process is known as the Kolbe-Schmitt reaction.

Salicylic acid is then acetylated using acetic anhydride, yielding aspirin and acetic acid as a byproduct. It is a common experiment performed in organic chemistry labs, and generally tends to produce low yields due to the relative difficulty of its extraction from an aqueous state. The trick to getting the reaction to work is to acidify with Phosphoric acid and heat the reagents under reflux with a boiling water bath for between 40 minutes and an hour.

Formulations containing high concentrations of aspirin often smell of vinegar. This is because aspirin can undergo autocatalytic degradation to salicylic acid in moist conditions, yielding salicylic acid and acetic acid.

2006-10-29 21:05:17 · answer #3 · answered by Goldista 6 · 0 0

I tried to do it but I couldn't.
Tips:
Try to find the divisor of 9, 7 and 4 (C) and use that number...

2006-10-29 21:11:55 · answer #4 · answered by vgvp67 2 · 0 0

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