Question 1

Which of the following statements best explains why primary amines have higher boiling points than tertiary amines of similar molar mass?

Accepted Answer

Primary amines can form more hydrogen bonds with each other due to the presence of two N–H bonds.

Question 2

Which of the following compounds is a secondary amine?

Accepted Answer

$$\mathrm{(C_2H_5)_2NH}$$

Question 3

Amines are classified as weak bases because:

Accepted Answer

They partially ionize in water to produce $$\mathrm{OH^-}$$ ions.

Question 4

Which of the following is the correct IUPAC name for the compound $$\mathrm{CH_3NHCH_2CH_2CH_3}$$?

Accepted Answer

N-methyl-1-propanamine

Question 5

Which of the following compounds is most soluble in water?

Accepted Answer

$$\mathrm{CH_3CH_2NH_2}$$

Question 6

Which of the following best describes the role of acetylcholine in the human body?

Accepted Answer

It acts as a neurotransmitter that triggers muscle contraction.

Question 7

What is the product of the reaction between ethylamine and hydrochloric acid?

Accepted Answer

$$\mathrm{CH_3CH_2NH_3^+Cl^-}$$

Question 8

Which of the following is NOT a major role of lipids?

Accepted Answer

Enzymes

Question 9

Which functional group has the highest priority in IUPAC nomenclature?

Accepted Answer

Carboxylic acid

Question 10

What is the IUPAC name for the following amide: $$\mathrm{CH_3CH_2CH_2CH_2CONHCH_2CH_3}$$?

Accepted Answer

N-ethylpentanamide

Question 11

Which of the following statements about amides is correct?

Accepted Answer

Primary and secondary amides can form hydrogen bonds, leading to higher melting points.

Question 12

Which of the following is a correct equation for the base hydrolysis of N-ethylpropanamide?

Accepted Answer

$$\mathrm{CH_3CH_2CONHCH_2CH_3 + NaOH \rightarrow CH_3CH_2COO^-Na^+ + CH_3CH_2NH_2}$$

Question 13

Which of the following neurotransmitters is synthesized from the amino acid tryptophan?

Accepted Answer

Serotonin

Question 14

Which of the following best describes a quaternary ammonium salt?

Accepted Answer

A nitrogen atom bonded to four carbon groups with a positive charge

Question 15

Which of the following is the correct IUPAC name for the compound $$\mathrm{CH_3CH_2CH_2NH_2}$$?

Accepted Answer

1-propanamine

Question 16

Which of the following is a real-life application of acid hydrolysis of amides?

Accepted Answer

Digestion of proteins in the stomach to produce amino acids and ammonium ions

Question 17

Which of the following best explains why amine salts are used in medications instead of free amines?

Accepted Answer

Amine salts are more soluble in body fluids than free amines.

Question 18

Which of the following is the correct classification for the compound $$\mathrm{CH_3CH_2CONHCH_3}$$?

Accepted Answer

Secondary amide

Question 19

Which of the following is a physiologically active nitrogen-containing compound produced by plants and often used as a stimulant?

Accepted Answer

Alkaloid

chapter 18

Study Guide - Practice Questions