Question 1

Which of the following best describes a tertiary amine?

Accepted Answer

An amine with three organic groups directly bonded to the nitrogen atom ($$R_3N)$$

Question 2

What is the correct IUPAC name for the compound with the structure $$CH_3CH_2NH_2$$?

Accepted Answer

Ethylamine

Question 3

Which of the following statements about the basicity of amines is TRUE?

Accepted Answer

Nonaromatic amines are slightly stronger bases than ammonia.

Question 4

Amines can form hydrogen bonds. Which type of amine can hydrogen bond with itself?

Accepted Answer

Primary and secondary amines

Question 5

Which of the following is a correct balanced equation for the reaction of ethylamine with water?

Accepted Answer

$$CH_3CH_2NH_2 + H_2O \rightleftharpoons CH_3CH_2NH_3^+ + OH^-$$

Question 6

Which compound is classified as a quaternary ammonium ion?

Accepted Answer

$$R_4N^+$$

Question 7

What is the product when a primary amine reacts with hydrochloric acid?

Accepted Answer

An ammonium salt ($$RNH_3^+Cl$$^-$$)

Question 8

Which of the following amines would be most soluble in water?

Accepted Answer

Methylamine ($$CH_3NH_2)$$

Question 9

Which of the following is a heterocyclic amine?

Accepted Answer

Pyridine

Question 10

What is the correct name for the compound with the structure $$	ext{Cyclohexyl-NH-CH}_3$$?

Accepted Answer

N-methylcyclohexylamine

Question 11

Which of the following statements about amine salts is TRUE?

Accepted Answer

Amine salts are more soluble in water than neutral amines.

Question 12

Which of the following is a typical property of alkaloids found in plants?

Accepted Answer

They are usually basic, bitter, and poisonous.

Question 13

Which of the following reactions will regenerate a free amine from its ammonium salt?

Accepted Answer

$$RNH_3^+ + OH$$^- \rightarrow $$RNH_2 + H_2O$

Question 14

Which of the following best explains why alcohols have higher boiling points than amines of similar size?

Accepted Answer

Alcohols can form more hydrogen bonds per molecule than amines.

Question 15

Which of the following is the correct product when histamine acetate reacts with potassium hydroxide?

Accepted Answer

Histamine, potassium acetate, and water

Question 16

Which of the following is NOT a property of quaternary ammonium ions?

Accepted Answer

They are acidic or basic in solution.

Question 17

Which of the following alkaloids is used as an antidote against nerve gases such as Sarin?

Accepted Answer

Atropine

Question 18

Which of the following best describes the role of the lone pair on the nitrogen atom in amines?

Accepted Answer

It allows amines to act as Lewis bases.

Question 19

Which of the following is the correct name for the compound $$CH_3CH_2CH_2N(CH_2CH_3)_2$$?

Accepted Answer

N,N-diethylpropylamine

Chapter 16: Amines – Structure, Properties, and Biological Significance

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