Question 1

Which of the following carboxylic acids is responsible for the irritation caused by a red ant sting?

Accepted Answer

Methanoic acid (formic acid)

Question 2

What is the IUPAC name for the compound with the condensed structural formula $$\mathrm{CH_3CH_2COOH}$$?

Accepted Answer

Propanoic acid

Question 3

Which of the following statements best explains why carboxylic acids have higher boiling points than alcohols of similar molar mass?

Accepted Answer

Carboxylic acids form dimers through two hydrogen bonds between molecules.

Question 4

Which of the following is the correct equation for the neutralization of benzoic acid with potassium hydroxide?

Accepted Answer

$$\mathrm{C_6H_5COOH + KOH \rightarrow C_6H_5COO^-\ K^+ + H_2O}$$

Question 5

Which of the following compounds is most soluble in water?

Accepted Answer

Methanoic acid

Question 6

What is the product when ethanoic acid reacts with methanol in the presence of an acid catalyst?

Accepted Answer

Methyl ethanoate and water

Question 7

Which of the following best describes the structure and function of a soap molecule?

Accepted Answer

A nonpolar tail that dissolves in oil and a polar head that dissolves in water

Question 8

Which of the following is the correct IUPAC name for the compound shown below? (See $$image_5$$: benzene ring with COOH at position 1 and Cl at position 3)

Accepted Answer

3-chlorobenzoic acid

Question 9

Which of the following best explains why esters have lower boiling points than carboxylic acids of similar mass?

Accepted Answer

Esters cannot form hydrogen bonds with each other.

Question 10

What are the products of the acid hydrolysis of methyl acetate?

Accepted Answer

Ethanoic acid and methanol

Question 11

Which of the following is the correct IUPAC name for the ester responsible for the flavor and odor of pears?

Accepted Answer

Propyl ethanoate

Question 12

Which of the following best describes the reaction that produces soap from fats?

Accepted Answer

Base hydrolysis (saponification) of esters

Question 13

Which of the following is the correct equation for the ionization of ethanoic acid in water?

Accepted Answer

$$\mathrm{CH_3COOH + H_2O \rightleftharpoons CH_3COO^- + H_3O^+}$$

Question 14

Which of the following is NOT a property of carboxylic acids with 1 to 4 carbon atoms?

Accepted Answer

They are strong acids.

Question 15

Which of the following is the correct product of the base hydrolysis (saponification) of methyl ethanoate with sodium hydroxide?

Accepted Answer

$$\mathrm{CH_3COO^-\ Na^+ + CH_3OH}$$

Question 16

Which of the following is the correct IUPAC name for the compound with the condensed formula $$\mathrm{CH_3CH_2CH_2COOH}$$?

Accepted Answer

Butanoic acid

Question 17

Which of the following is a correct statement about the acidity of carboxylic acids?

Accepted Answer

Carboxylic acids are weak acids and have small acid dissociation constants ($$K_a).$$

Question 18

Which of the following is the correct IUPAC name for the compound shown below? (See $$image_6$$: benzene ring with COOH at position 1 and Cl at position 3)

Accepted Answer

3-chlorobenzoic acid

Question 19

Which of the following is the correct IUPAC name for the compound with the condensed formula $$\mathrm{CH_3CH_2COOCH_3}$$?

Accepted Answer

Methyl propanoate

Ch. 16

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