Question

Esters, RCOOR9, are formed by the reaction of carboxylic acids, RCOOH, and alcohols, R9OH, where R and R9 are hydrocarbon groups. Many esters are responsible for the odors of fruit and, thus, have important uses in the food and cosmetics industries. The first two steps in the mechanism of ester formation areIdentify the Lewis acids and Lewis bases in these two steps.

Answer 1

RCOOH + R9OH → RCOOR9

The Lewis base is R9OH and the Lewis acid is RCOOH .

What is the mechanism of ester formation ?

• Esterification is the term used to describe the chemical process that creates the ester.
• Esterification is a chemical reaction that produces at least one ester product by reacting an organic acid (RCOOH) with an alcohol (ROH) to create an ester (RCOOR) and water.

• When alcohols and carboxylic acids are heated together in the presence of an acid catalyst, esters are created.
• Usually, concentrated sulfuric acid serves as the catalyst. In some circumstances, dry hydrogen chloride gas is employed,
• but these typically involve aromatic esters (ones where the carboxylic acid contains a benzene ring).

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