Font size
WorksheetsCHEM 242 - Amines and their reactions - Chapter 22
Total questions: 58
Worksheet time: 44mins
Which of the following is not a primary amine?
Diethylamine
3-Hexylamine
Cyclohexylamine
1-Butylamine
Which of the following amines do you expect to have the highest boiling point?
Triethyl amine
methyl amine
dimethyl amine
diethyl amine
Which pairing of general formula and compound class is incorrect?
RCONH2; amide
R3CNH2; tertiary amine
RNH2; amine
(RCO)2NH; imide
Which one among the following is a strongest base
methyl amine
Ammonia
Phenyl amine
Name the functional group shown.
sulfhydryl
hydroxyl
amine
phosphate
Name the compound based on the functional group present.
ethanamine
methanamine
amino acid
propanamine
What is the basis for classifying amines as primary, secondary, or tertiary?
the number of carbon atoms bonded directly to the nitrogen atom
the number of carbon atoms bonded to a carbon bearing nitrogen
the number of nitrogen atoms present
the number of hydrogen atoms present
Which of the following is a tertiary amines?
A. RNH2
B. RN(CH3)2
C. RNHCH3
D. RN+(CH3)
The structure of an amine is shown. Black spheres represent carbon, the blue sphere nitrogen and the grey spheres hydrogen. This compound
is a primary amine
is a secondary amine
is a tertiary amine
cannot be classified as a primary, secondary or tertiary amine.
Amides are converted to amines by
Oxidation
Reduction
Hydrolysis
Ammonolysis
Amines can be prepared from the following reactions except ______
reduction of nitriles
reduction of amides
reduction of nitro compounds
reduction of carboxylic acids
N,N-Dimethyl-3-pentanamine
N,N-Dimethyl-3-hexanamine
N,N-Dimethyl-3-éthylpropanamine
N,N-Dimethyl-5-éthylpropanamine
N,N-dimethylethylamine
N,N-diethylethylamine
N,N-dimethylpropylamine
N,N-dimethylmethylamine
The following statements are true about amines EXCEPT
A. Only primary and secondary amines can form hydrogen bonding with water molecules.
B. Amino compound can be prepared by reduction of nitrile compounds.
C. The boiling point of tertiary amine is the lowest because it cannot form hydrogen bonding between molecules.
D. Amino compound undergoes nucleophilic substitution with haloalkes.
Pick the FALSE statement about amines
A. Amines can undergo alkylation with haloalkanes
B. Aliphatic amines are stronger bases than ammonia
C. Aliphatic amines are weaker bases than aromatic amine
D. Both primary aliphatic and aromatic amines will release N2 when reacts with HNO2 at high temperature
Aromatic amines are ____ bases than ammonia, due to the ____ nature of the aryl group.
Stronger, electron donating
Weaker, electron donating
Stronger, electron withdrawing
Weaker, electron withdrawing
The following methods can be used to prepare ethanamine except for
ethanenitrile + LiAlH4
ethanamide + LiAlH4
1-bromoethane + NH3
1-bromoethane + KCN + LiAlH4
What is the IUPAC name of the following compound?
N-ethylcyclohexanamine
N-ethylaniline
N-cyclohexylethanamine
N-cyclohexylethanamine
The structure of a nitrogen containing compound is shown. The black spheres represent carbon, the blue sphere nitrogen and grey spheres hydrogen. Give the name of this compound.
(a)
Consider the compounds 1-propylamine and 2-propylamine. Which of the following is correct?
Boiling point of 1-propylamine is higher than that of 2-propylamine.
Boiling point of 2-propylamine is higher than that of 1-propylamine.
The boiling point of these compounds is approximately the same.
Give the name of this compound.
(a)
This compound
can hydrogen bond with water but is not soluble in water.
can hydrogen bond with water and is soluble in water.
cannot hydrogen bond with water and is not soluble in water.
Consider the compounds methylethylamine and trimethylamine. Which of these has the higher boiling point?
methylethylamine
trimethylamine
both have approximately the same boiling point since they contain the same number of carbon atoms.
The order of reactivity of halides with amines is
RI > RBr <Cl.
RI <RBr >RCl.
RBr >RI>RCl.
RI > RBr >RCl.
What is the name of this amine?
2-heptanamine
N-methyl-hexanamine
2-ethylamine
N-hepyl-ethanamine
What is the name of this amine?
2-methyl-1-propanamine
N-methyl-propanamine
2-dimethylamine
Butamine
Arrange the following compound according to decreasing order of boiling point?
I: Propanol
II: Propanamine
III: Propanoic acid
IV: Propanal
II>III> I>IV
IV>II> I>III
III>I> II>IV
III>I> II>IV
What is the reagent required to carry out the following conversion?
Hexanamide --> hexanamine
NaOH
Dilute HCl
HNO2
LiAlH4, ether
Name this compound
(a)
Name this compound
(a)
Name this compound
(a)
The substituents attached to the nitrogen of a compound can be identified by using the locant "N".
true
false
Name this compound
(a)
Name this compound
(a)
Which compound do you expect to have the highest boiling point?
trimethylamine
ethylamine
ethylmethylamine
propylamine
Which compound has the lowest boiling point?
Do you expect this compound to be water soluble?
yes
no
Do you expect this compound to be water soluble?
yes
no
Do you expect this compound to be water soluble?
yes
no
Estimated pKa of MeNH3+
10-11
5-7
35-38
Estimated pKa of diethylamine is _______
10-11
35-38
24-26
42-45
Estimated pKa of amine
35-38
10-12
4-7
25-29
Estimated pKa of aniline
4-5
12-15
35-38
41-44
Estimated pKa of pyridine
5-6
10-12
35-38
40-42
Estimated pKa of pyrrole
0-1
5-6
9-11
35-38
Identify the number of primary amines in spermine
2
3
1
0
Identify the number of secondary amines are present in clomipramine.
2
0
1
3
identify which compound is the most basic
This compound is an example of
a primary amine
a secondary amine
a tertiary amine
cannot be classified as a primary, secondary or tertiary amine
An amine is defined by...
A carbon-nitrogen bond
A carbon-oxygen bond
State the reagent used to convert butanoic acid to butanamide.
Nitric acid
Ammonia
Water
Nitrous acid
What is the basis for classifying amines as primary, secondary, or tertiary?
the number of carbon atoms bonded directly to the nitrogen atom
the number of carbon atoms bonded to a carbon bearing nitrogen
the number of nitrogen atoms present
the number of hydrogen atoms present
Which statement best describes amino acids?
They are acidic
They are basic
The are both acidic and basic
They are neither acidic nor basic
Name the compound.
N,N-dimethyl-3-pentanamine
N,N-dimethyl-3-hexanamine
N,N-dimethyl-3-ethylpropanamine
N,N-dimethyl-5-ethylpropanamine
Which of the following amines do you expect to have the highest boiling point?
Triethanamine
Dimethanamine
Methanamine
Diethanamine
Pick the FALSE statement about amines.
Amines can undergo alkylation with haloalkanes.
Aliphatic amines are stronger bases than ammonia.
Aliphatic amines are weaker bases than aromatic amine.
Both primary aliphatic and aromatic amines will release N2 when reacts with HNO2 at high temperature.
