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Chapter 16 Carboxylic Acids and Esters

Chapter 16 Carboxylic Acids and Esters. 16.5 Properties of Esters. 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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Chapter 16 Carboxylic Acids and Esters

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  1. Chapter 16 Carboxylic Acids and Esters 16.5Properties of Esters

  2. 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

  3. Acid Hydrolysis of Esters In acid hydrolysis, • an ester reacts with water to produce a carboxylic acid and an alcohol • an acid catalyst is required

  4. Base Hydrolysis (Saponification) 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

  5. “Soaps” The base hydrolysis of long chain fatty acids • produces acid salts called “soaps”

  6. 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

  7. Learning Check Write the condensed structural formulas of the organic products when methyl acetate reacts with: A. water and an acid catalyst B. KOH

  8. Solution Write the condensed structural formulas of the organic products when methyl acetate reacts with: A. Water and an acid catalyst B. KOH

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