Hw 10: Carboxylic Acids and Their Derivatives

What is the common name for CH 3 COOH?

A) formic acid

B) acetic acid

C) propionic acid

D) oxalic acid

E) malonic acid

B) acetic acid

What is the functional group of a carboxylic acid?

A) –CO–

B) –CHO

C) –COOH

D) –OH

E) –COOR

C) –COOH

What is the correct structure of butanoic acid?

A) CH 3 CH 2 CO 2 H

B) CH 3 CH=CHCO 2 H

C) HO 2 CCH 2 CH 2 CO 2 H

D) CH 3 CH 2 CH 2 CO 2 H

E) HOCH 2 CH 2 CH 2 CO 2 H

D) CH 3 CH 2 CH 2 CO 2 H

Which of the following is not a derivative of carboxylic acid?

A) Ester

B) Amide

C) Aldehyde

D) Acid halide

E) Acid anhydride

C) Aldehyde

What is formed when a carboxylic acid reacts with an alcohol in the presence of an acid catalyst?

A) Amide

B) Ketone

C) Aldehyde

D) Ester

E) Acid anhydride

D) Ester

Which compound is formed when CH₃COOH is treated with ammonia (NH₃)?

A) Amide

B) Ketone

C) Aldehyde

D) Ester

E) Acid anhydride

A) Amide

What is the name of the following molecule, (CH 3 ) 2 CHCONH 2 ?

A) 2-methylpropanamide

B) 3-methylpropanamide

C) butyramide

D) α-methylbutyramide

E) methylethanamide

A) 2-methylpropanamide

What is the general formula for a carboxylic acid?

A) RCOH

B) RCHO

C) RCOOH

D) ROH

E) RCOOR

C) RCOOH

Which of the following derivatives of carboxylic acids is the most reactive in nucleophilic acyl

substitution?

A) Amide

B) Ester

C) Acid anhydride

D) Ketone

E) Acid chloride

E) Acid chloride

Which carboxylic acid derivative can be formed by reacting a carboxylic acid with thionyl chloride (SOCl₂)?

A) Amide

B) Ester

C) Acid anhydride

D) Ketone

E) Acid chloride

E) Acid chloride

What is the IUPAC name of the ester CH₃COOCH₂CH₃?

A) Ethyl acetate

B) Methyl propanoate

C) Ethyl methanoate

D) methyl methanoate

E) Ethyl ethanoate

E) Ethyl ethanoate

Which type of reaction converts an acid chloride to an ester?

A) Addition

B) Hydrolysis

C) Condensation with alcohol

D) Substitution with ammonia

E) Reaction with an aldehyde

C) Condensation with alcohol

Which of the following molecules would have the highest boiling point?

A) CH 3 CO 2 H

B) CH 3 CH 2 OH

C) CH 3 CHO

D) CH 3 CH=CH 2

E) HCO 2 H

A) CH 3 CO 2 H

The boiling point of propanoic acid is higher than that of 1-butanol because:

A) propanoic acid has a higher molecular weight than 1-butanol.

B) propanoic acid is more soluble in water than 1-butanol.

C) propanoic acid is a better hydrogen bond donor than 1-butanol.

D) propanoic acid forms hydrogen bonded dimers and 1-butanol does not.

E) 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

D) propanoic acid forms hydrogen bonded dimers and 1-butanol does not.

Which of the following molecules is the weakest acid?

A) CH 3 CH 2 CO 2 H

B) CH 3 CH 2 CH 3

C) CH 3 CH 2 OH

D) CH 3 CH 2 NH 2

E) H 2 O

B) CH 3 CH 2 CH 3

The mechanism of saponification is

A) nucleophilic aromatic substitution.

B) nucleophilic acyl substitution.

C) electrophilic aromatic substitution.

D) S N 2.

E) S N 1.

B) nucleophilic acyl substitution.

Acid chlorides react with alcohols to give:

A) ketones

B) esters

C) acetals

D) amides

E) carboxylic acids

B) esters

Which of the following carbonyl compounds reacts fastest with water?

A) carboxylic acid

B) ester

C) ketone

D) acid chloride

E) amide

D) acid chloride

Ethyl propanoate can be prepared by the reaction of

A) ethanoic acid with propanol.

B) ethanoic acid with isopropanol.

C) ethanoyl chloride with propanol.

D) propanoyl chloride with ethanol.

E) acetic anhydride with propanol.

D) propanoyl chloride with ethanol.

What is the functional group of an amide?

A) –COOH

B) –COO–

C) –COOR

D) –CONH₂

E) –CHO

D) –CONH₂

What is the correct IUPAC name of CH₃CONH₂?

A) Ethanamide

B) Ethyl amide

C) Ethyl methanoate

D) Methanamide

E) Acetamide

A) Ethanamide

Which of the following compounds is an example of a primary amide?

A) CH₃COOH

B) CH₃CON(CH₃)₂

C) CH₃CONH₂

D) CH₃CONHCH₃

E) CH₃CON(CH₃) 2

C) CH₃CONH₂

What is the product formed when a carboxylic acid reacts with ammonia (NH₃) under heat?

A) Alcohol

B) Ester

C) Amide

D) Aldehyde

E) Acid anhydride

C) Amide

What is the general formula for an acid anhydride?

A) R–COO–R’

B) R–CO–O–CO–R’

C) R–CH₂–OH

D) R–COOH

E) R–COH

B) R–CO–O–CO–R’

Which of the following is the correct IUPAC name for (CH₃CO)₂O?

A) Acetic acid

B) Acetyl chloride

C) Ethanoic anhydride

D) Ethanoic ester

E) Ethyl ethanoate

C) Ethanoic anhydride

Acid anhydrides are formed by the dehydration of which functional group?

A) Alcohols

B) Ketones

C) Aldehydes

D) Carboxylic acid

E) Acetone

D) Carboxylic acid

What are the products of the reaction between an acid anhydride and water?

A) Amide and water

B) Two carboxylic acids

C) Carboxylic acid and amide

D) Alcohol and ester

E) Aldehyde and ketones

B) Two carboxylic acids

Which of the following names represents a mixed acid anhydride?

A) Butanoic acid

B) Ethanoic anhydride

C) Propanoic anhydride

D) methyl methanoate

E) Ethanoic propanoic anhydride

E) Ethanoic propanoic anhydride