Chapter 16 Carboxylic Acids and Esters
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Transcript of Chapter 16 Carboxylic Acids and Esters
General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. 1
Chapter 16 Carboxylic Acids and Esters
16.5Properties of Esters
General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc.
Boiling Points of Esters
The boiling points of esters are higher than for alkanes of similar mass are lower than alcohols and carboxylic acids of
similar mass because esters cannot form hydrogen bonds
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In acid hydrolysis, an ester reacts with water to produce a carboxylic
acid and an alcohol an acid catalyst is required
Acid Hydrolysis of Esters
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Base hydrolysis (also called saponification) is the reaction of an ester with a strong base produces the salt of the carboxylic acid and an
alcohol
Base Hydrolysis (Saponification)
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“Soaps”
The base hydrolysis of long chain fatty acids produces acid salts called “soaps”
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Cleaning Action of Soap
A soap contains a nonpolar end that dissolves in nonpolar
fats and oils and a polar end that dissolves in water forms groups of soap molecules called micelles that
dissolve in water and are washed away
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Write the condensed structural formulas of the organic products when methyl acetate reacts with:
A. water and an acid catalyst
B. KOH
Learning Check
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Write the condensed structural formulas of the organic products when methyl acetate reacts with:
A. Water and an acid catalyst
B. KOH
Solution