CHEM 219 Module 6 Exam Questions with Correct Answers Latest Update 2025-2026
derivative of ammonia where one or more hydrogen replaced by carbon-based groups - Answers
amine
R-NH2 - Answers primary amine
R2NH - Answers secondary amine
R3N - Answers tertiary amine
NH3 - Answers Ammonia
a configuration in which nitrogen has four bonds with other atoms and, as such, the molecule
has an electron deficit - Answers quarternary amine
naming simple amines - Answers name by alkyl group +amine at the end
- Answers Ethylamine
- Answers diethylamine
- Answers triethylamine
- Answers cyclohexylamine
naming amines with additional functional groups present - Answers name parent chain and then
name amine as amino substituent
- Answers 3-aminobutanoic acid
- Answers 2,4-diaminobenzoic acid
- Answers 1,4-diaminobutane
- Answers 4-amino-2-butanone
naming unsymmetrically substituted 2nd and 3rd degree amines - Answers name amine as N-
substituted where largest compound = parent
name other groups as N-alkyl substituents
- Answers N-ethyl-N-methylpropylamine
- Answers N,N-dimethylpropylamine
- Answers N-ethyl-N-methyl-cyclohexylamine
aryl amine naming - Answers amino groups direct attached to aromatic ring
, - Answers aninline/ aminobenzene
- Answers benzylamine
amine geometry - Answers trigonal pyramidal, 109.5 bond angle
amine polar or nonpolar? - Answers polar
amine hydrogen bonding? - Answers primary and secondary amines can form intermolecular
hydrogen bonds
boiling points of 1st and 2nd degree amines? - Answers higher than alkanes
lower than alcohols
why are amines lower bp than alcohols? - Answers N-H bond weaker than O-H bonds bc N is
less electronegative than O
can tertiary amines have hydrogen bonds? - Answers can accept hydrogen bonds but cannot
make them intermolecularly
are amines soluble in water? in alcohol? - Answers small amines (up to 6 carbons) are soluble
amine aqueous solubility does what? - Answers solubility decreases as molecular weight
increases
are amines acidic or basic? - Answers basic and nucleophilic
what measures bases - Answers pKb (lower score = more basic)
pKb of alkyl amines vs aromatic amines - Answers alkyl: 3-4, aromatic: 9 (resonance sharing in
aromatic)
ammonia + alkyl halide = - Answers amine
2 steps to alkylation of ammonia and amines - Answers 1. ammonia as nucleophile displaces
halide ion via Sn2 reaction
2.sodium hydroxide (base) added to deprotonate the alkylammonium cation to produce the
"free base" of the amine
alkylation of ammonia and amines - Answers alkyl halide added to an ammonia to create an
amine
what does a primary amine alkylate to? - Answers secondary amine (R2NH)
What does a secondary amine alkylate to? - Answers tertiary amine (R3N)
what does a tertiary amine alkylate to? - Answers quaternary ammonium salt
derivative of ammonia where one or more hydrogen replaced by carbon-based groups - Answers
amine
R-NH2 - Answers primary amine
R2NH - Answers secondary amine
R3N - Answers tertiary amine
NH3 - Answers Ammonia
a configuration in which nitrogen has four bonds with other atoms and, as such, the molecule
has an electron deficit - Answers quarternary amine
naming simple amines - Answers name by alkyl group +amine at the end
- Answers Ethylamine
- Answers diethylamine
- Answers triethylamine
- Answers cyclohexylamine
naming amines with additional functional groups present - Answers name parent chain and then
name amine as amino substituent
- Answers 3-aminobutanoic acid
- Answers 2,4-diaminobenzoic acid
- Answers 1,4-diaminobutane
- Answers 4-amino-2-butanone
naming unsymmetrically substituted 2nd and 3rd degree amines - Answers name amine as N-
substituted where largest compound = parent
name other groups as N-alkyl substituents
- Answers N-ethyl-N-methylpropylamine
- Answers N,N-dimethylpropylamine
- Answers N-ethyl-N-methyl-cyclohexylamine
aryl amine naming - Answers amino groups direct attached to aromatic ring
, - Answers aninline/ aminobenzene
- Answers benzylamine
amine geometry - Answers trigonal pyramidal, 109.5 bond angle
amine polar or nonpolar? - Answers polar
amine hydrogen bonding? - Answers primary and secondary amines can form intermolecular
hydrogen bonds
boiling points of 1st and 2nd degree amines? - Answers higher than alkanes
lower than alcohols
why are amines lower bp than alcohols? - Answers N-H bond weaker than O-H bonds bc N is
less electronegative than O
can tertiary amines have hydrogen bonds? - Answers can accept hydrogen bonds but cannot
make them intermolecularly
are amines soluble in water? in alcohol? - Answers small amines (up to 6 carbons) are soluble
amine aqueous solubility does what? - Answers solubility decreases as molecular weight
increases
are amines acidic or basic? - Answers basic and nucleophilic
what measures bases - Answers pKb (lower score = more basic)
pKb of alkyl amines vs aromatic amines - Answers alkyl: 3-4, aromatic: 9 (resonance sharing in
aromatic)
ammonia + alkyl halide = - Answers amine
2 steps to alkylation of ammonia and amines - Answers 1. ammonia as nucleophile displaces
halide ion via Sn2 reaction
2.sodium hydroxide (base) added to deprotonate the alkylammonium cation to produce the
"free base" of the amine
alkylation of ammonia and amines - Answers alkyl halide added to an ammonia to create an
amine
what does a primary amine alkylate to? - Answers secondary amine (R2NH)
What does a secondary amine alkylate to? - Answers tertiary amine (R3N)
what does a tertiary amine alkylate to? - Answers quaternary ammonium salt
