Carboxylic acids and their derivatives

Carboxylic acids and their derivatives

CHM 252

Overview

• Carboxylic acid: ROOCH

• ester: OR bonded to carbonyl carbon

• amide: -NH2, -NHR, -NR2, bonded to carbonyl carbon

• all boil at a higher temperature than alkanes

• acyl group: C=O and everything to the left, does not change

Multiple Choice

Carboxylic acids can hydrogen bond with each other

• True

• False

Multiple Choice

What kind of reaction is commonly used to make esters?

• addition

• substitution

• elimination

Carboxylic acids

• saturated, straight chains up to 9 carbons are volatile ___

• Larger R groups are ___ odorless ___

Multiple Choice

What is the common name for ethanoic acid?

• acetic acid

• butyric acid

• valeric acid

Multiple Choice

What is the common name of a carboxylic acid with 18 carbons?

• formic acid

• valeric acid

• stearic acid

• propionic acid

Multiple Choice

What is the Greek letter for the third carbon?

• alpha

• beta

• gamma

Multiple Choice

Can esters hydrogen bond with each other?

• yes

• no

Esters

• Colorless, volatile liquids, pleasant odors

• Simple esters have a lower boiling point than acids

Multiple Choice

Amides and esters are___

• basic

• acidic

• neutral

Multiple Choice

Which kind of amide can form multiple hydrogen bonds with other amides?

• primary (unsubstituted)

• secondary (monosubstituted)

• tertiary (disubstituted)

Multiple Choice

Which kind of amide has a lower boiling point?

• primary (unsubstituted)

• secondary (monosubstituted)

• tertiary (disubstituted)