Question 1

Which of the following best describes a secondary (2°) amine?

Accepted Answer

A nitrogen atom bonded to two carbon groups and one hydrogen atom.

Question 2

What is the correct IUPAC name for the amide formed from propanoic acid and methylamine?

Accepted Answer

N-methylpropanamide

Question 3

Which of the following compounds is most likely to be soluble in water due to hydrogen bonding?

Accepted Answer

A primary amine

Question 4

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

Accepted Answer

$$\mathrm{CH_3NH_3^+Cl^-} ($$methylammonium chloride)

Question 5

Which of the following best explains why lemon juice can neutralize the fishy odor of amines?

Accepted Answer

The acid in lemon juice reacts with amines to form odorless ammonium salts.

Question 6

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

Accepted Answer

$$\mathrm{CH_3CH_2CONHCH_3 + NaOH \rightarrow CH_3CH_2COO^-Na^+ + CH_3NH_2}$$

Question 7

Which of the following statements about alkaloids is TRUE?

Accepted Answer

Alkaloids are naturally occurring amines found in plants and often have physiological effects.

Question 8

What is the correct IUPAC name for the amide derived from butanoic acid and N,N-dimethylamine?

Accepted Answer

N,N-dimethylbutanamide

Question 9

Which of the following best describes the hydrolysis of an amide under acidic conditions?

Accepted Answer

It produces a carboxylic acid and an ammonium salt.

Question 10

Which of the following is the correct condensed structural formula for methylpropylamine?

Accepted Answer

$$\mathrm{CH_3NHCH_2CH_2CH_3}$$

Question 11

Which of the following is a property of ammonium salts that makes them useful as active ingredients in medications?

Accepted Answer

They are solids at room temperature and soluble in water.

Question 12

Which of the following best describes the role of amines in water?

Accepted Answer

Amines act as Brønsted–Lowry bases, accepting $$\mathrm{H^+}$$ from water to form ammonium ions.

Question 13

Which of the following is the correct product of the acid hydrolysis of ethanamide ($$\mathrm{CH_3CONH_2}) $$with HCl?

Accepted Answer

$$\mathrm{CH_3COOH} ($$acetic acid) and $$\mathrm{NH_4$^+Cl^-} ($$ammonium chloride)

Question 14

Which of the following is the correct name for the aromatic amine with a chlorine atom at the 2-position?

Accepted Answer

2-chloroaniline

Question 15

Which of the following best explains why tertiary amines are less soluble in water than primary amines?

Accepted Answer

Tertiary amines cannot form hydrogen bonds with each other.

Question 16

Which of the following is a correct statement about the preparation of amides?

Accepted Answer

Amides are formed by reacting a carboxylic acid with ammonia or a primary/secondary amine and heat.

Question 17

Which of the following is the correct IUPAC name for the amide with the structure $$\mathrm{CH_3CONHCH_3}$$?

Accepted Answer

N-methylethanamide

Question 18

Which of the following best describes the difference between amines and amides?

Accepted Answer

Amines have a nitrogen atom bonded to alkyl or aromatic groups, while amides have a nitrogen atom bonded to a carbonyl group.

Amines and Amides

Guida di studio - Domande di pratica