Answered: The flavors and aromas of almost any…

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter22: Biochemistry

Section: Chapter Questions

Problem 68E

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The flavors and aromas of almost any fruit are primarily due to esters. In an experiment, an artificial fruit flavor is prepared using the Fischer esterification (reaction of an alcohol with a carboxylic acid in the presence of sulfuric acid catalyst).

Why is sodium bicarbonate solution used in the workup of the reaction? What advantage does sodium bicarbonate have over sodium hydroxide solution?

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Expert Solution

Step 1

Esters are chemical compounds with formula RCOOR' where, R and R' can be same or different alkyl or aryl groups.

When carboxylic acid is heated with an alcohol by using sulfuric acid as a catalyst then this chemical reaction is called esterification.

Chemical equation for this reaction is as follows.

$R C O O H + R' O H \leftrightarrow R - C O O - R' + H_{2} O$

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