1. Which of the following is a primary alkylamine?
A.
Methylamine
B.
Dimethylamine
C.
Trimethylamine
D.
Tetramethylammonium ion
Correct Answer:
Methylamine
Explanation:
Methylamine, CH3NH2, has one alkyl group attached to the nitrogen atom, so it is a primary alkylamine.
2. What is the general formula of a primary alkylamine?
A.
RNH2
B.
R2NH
C.
R3N
D.
R4N+
Correct Answer:
RNH2
Explanation:
A primary alkylamine contains one alkyl group and two hydrogen atoms attached to nitrogen, giving the formula RNH2.
3. Which of the following is a secondary alkylamine?
A.
Ethylamine
B.
Diethylamine
C.
Triethylamine
D.
Propylamine
Correct Answer:
Diethylamine
Explanation:
Diethylamine, (C2H5)2NH, has two ethyl groups attached to nitrogen, so it is a secondary alkylamine.
4. Which of the following is a tertiary alkylamine?
A.
Methylamine
B.
Ethylamine
C.
Dimethylamine
D.
Trimethylamine
Correct Answer:
Trimethylamine
Explanation:
Trimethylamine, (CH3)3N, has three methyl groups attached to nitrogen and no N-H bond, so it is a tertiary alkylamine.
5. An alkylamine containing two alkyl groups attached to nitrogen is classified as a:
A.
Primary amine
B.
Secondary amine
C.
Tertiary amine
D.
Quaternary ammonium salt
Correct Answer:
Secondary amine
Explanation:
A secondary alkylamine has two alkyl groups and one hydrogen atom attached to the nitrogen atom.
6. How many alkyl groups are attached to the nitrogen atom in a tertiary alkylamine?
A.
One
B.
Two
C.
Three
D.
Four
Correct Answer:
Three
Explanation:
A tertiary alkylamine has three alkyl groups directly bonded to its nitrogen atom.
7. What is the classification of propylamine, C3H7NH2?
A.
Primary alkylamine
B.
Secondary alkylamine
C.
Tertiary alkylamine
D.
Quaternary ammonium compound
Correct Answer:
Primary alkylamine
Explanation:
Propylamine has the structure RNH2, with one propyl group attached to nitrogen, so it is a primary alkylamine.
8. Which formula represents a secondary alkylamine?
A.
RNH2
B.
R2NH
C.
R3N
D.
R4N+
Correct Answer:
R2NH
Explanation:
The formula R2NH represents an amine in which two alkyl groups and one hydrogen atom are attached to nitrogen.
9. What is the classification of triethylamine, (C2H5)3N?
A.
Primary alkylamine
B.
Secondary alkylamine
C.
Tertiary alkylamine
D.
Quaternary ammonium compound
Correct Answer:
Tertiary alkylamine
Explanation:
Triethylamine contains three ethyl groups attached to nitrogen, so it is a tertiary alkylamine.
10. Which alkylamine contains one alkyl group and two hydrogen atoms attached to nitrogen?
A.
Primary alkylamine
B.
Secondary alkylamine
C.
Tertiary alkylamine
D.
Quaternary ammonium compound
Correct Answer:
Primary alkylamine
Explanation:
Primary alkylamines have the general structure RNH2, meaning one alkyl group and two hydrogen atoms are bonded to nitrogen.
Short questions are currently unavailable for this page.