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Organic and Biochemistry > Exam 2 > Flashcards

Exam 2 Flashcards

1
Q

The boiling point of ethylamine is higher than that of propane but lower than that of 1-propanol. This means that

-the intermolecular forces between two amine molecules are only London dispersion forces.
-hydrogen bonds between two amino groups are weaker than those between two alcohol groups.
-the intermolecular forces between two amine molecules are only dipole-dipole.
-the intermolecular forces between two amine molecules are ionic in nature.
-a molecule of ethylamine cannot form a hydrogen bond with another molecule of itself.

A

hydrogen bonds between two amino groups are weaker than those between two alcohol groups.

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2
Q

Which of the following is an acetal?

A
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3
Q

Which of the following molecules is an example of a secondary amine?

A
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4
Q

All of the following are characteristics of alkaloids except

basic.
pleasant smelling.
physiologically active.
bitter tasting.
toxic to humans in high doses.

A

pleasant smelling

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5
Q

Which class of amines cannot form hydrogen bonds with itself?

1°
2°
3°
A and B
all of the above

A

3°

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6
Q

What is the correct IUPAC name for the following compound?

ethyl phenyl amine
2-ethyl aniline
N-ethyl aniline
ethyl aniline

A

N-ethyl aniline

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7
Q

Which observation denotes a positive Benedict’s test?

-A red-brown solution becomes clear and colorless.
-A red precipitate forms from a blue solution.
-A pale yellow solution with an odor of chlorine changes to a purple color.
-A mirror-like deposit forms from a colorless solution.
-A purple solution yields a brown precipitate.

A

A red precipitate forms from a blue solution.

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8
Q

Which molecule shown is a primary alcohol?

A
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9
Q

When a thiol is oxidized the product is

an alkene.
sulfuric acid.
an aldehyde.
a ketone.
a disulfide.

A

a disulfide.

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10
Q

The reaction that occurs between an amine and an acid is best illustrated by

-(CH3)2NH + HCl → (CH3)2NH2 + Cl-.
-(CH3)2NH + HCl → (CH3)2NH2+ + OH-.
-(CH3)2NH + HCl → (CH3)2NH + Cl-.
-(CH3)2NH + H2O → (CH3)2N + H3O+.
-(CH3)2NH + HCl → (CH3)2NH Cl- + H3O+.

A

(CH3)2NH + HCl → (CH3)2NH2 + Cl-.

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11
Q

Amines are most similar in chemical structure and behavior to

the hydronium ion.
-a primary alcohol.
-sodium hydroxide.
-water.
-ammonia.

A

ammonia

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12
Q

What is the major organic product of the following reaction?

A
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13
Q

What is the most important chemical property of amines?

-They are strong bases.
-They are weak bases.
-They are weak acids.
-They are strong acids.
-They are oxidizing acids.

A

They are weak bases.

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14
Q

Which molecule shown is an ether?

A
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15
Q
A
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16
Q

What is the line bond drawing for 2-phenyl-3-pentanol

A
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17
Q

Which molecule is a heterocyclic compound?

A
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18
Q

Which compound would have the highest boiling point?

A
19
Q

Which of the following is the correct line drawing for 2,4-dimethyl-3-pentanone?

A
20
Q

What is the IUPAC name of the compound shown?

A

3-methylbutanal

21
Q

The common name of CH3CH2OH is

rubbing alcohol
grain alcohol
wood alcohol
glycerol
antifreeze

A

grain alcohol

22
Q

The major product obtained from dehydration of 2-hexanol is

2-hexene
3-hexene
1-hexene
2-hexanal
2-hexanone

A

2-hexene

23
Q

The symbol [O] written above a reaction arrow means

-that an oxidation reaction is occurring.
-oxygen is removed from one of the reactants during the reaction.
-that a reduction reaction is occurring and oxygen is liberated.
-the reaction consumes oxygen from the atmosphere.
-none of the above

A

that an oxidation reaction is occurring.

24
Q

An amine that is insoluble in water can be made to dissolve by adding it to an aqueous solution of

HCL
an amide
a different amine
NaOH
none of the above; It can’t be made water soluble

A

HCL

25
Q

The common name of an industrial solvent used in many manufacturing processes is methyl ethyl ketone. The correct systematic name and structural formula of this compound are

A
26
Q
A
27
Q

Which molecule is a ketone?

A
28
Q

The carbonyl group is

-produced by reduction reactions of primary or secondary alcohols.
-a general term for any functional group involving a carbon-oxygen bond.
-a functional group with a 6-membered ring where at least one atom is oxygen.
-a functional group in which carbon and oxygen are joined by a double bond.
-found only in aldehydes and ketones.

A

a functional group in which carbon and oxygen are joined by a double bond.

29
Q

Which molecule is formaldehyde?

A
30
Q

Alcohols, ethers, and phenols can be considered organic derivatives of the inorganic compound

water
ammonia
sodium hydroxide
carbon dioxide
none of these

A

water

31
Q

Which of the following is not a property of aldehydes and ketones?

-They have lower boiling points than alcohols of similar molar mass.
-They are polar.
-They cannot form hydrogen bonds with water because they have no hydrogen atoms bonded to oxygen.
-Most have distinctive odors.
-They have higher boiling points than alkanes of similar molar mass.

A

They cannot form hydrogen bonds with water because they have no hydrogen atoms bonded to oxygen.

32
Q

Some amine drugs are administered in the form of salts in order to make them

-more soluble in body fluids.
-form into pills more easily.
-taste bitter.
-more basic.

A

-more soluble in body fluids.

33
Q

Which of the following line bond drawings correctly represents N,N-diisopropylamine?

A
34
Q

What is the product of the reduction of 3-methyl-2-pentanone?

-2-methyl-3-pentanol
-3-methyl-2-pentanal
-3-methyl-2-pentanol
-3-methyl-2-pentene
-no reaction

A

-3-methyl-2-pentanol

35
Q

What is the systematic name of the following compound?

-ethyl methyl ether
-diethyl ether
-2-methoxy propane
-2-ethoxy propane

A

2-methoxy propane

36
Q
A
37
Q

The following is an example of a

-quaternary ammonium salt.
-quanternary amine.
-tertiary ammonium salt.
-secondary ammonium salt.
-tertiary amine.

A

-quaternary ammonium salt.

38
Q

Which molecule is N,N-dimethylpropylamine?

A
39
Q

Which of the following alcohols would not be able to be oxidized with any type of oxidizing agent?

A
40
Q

Which of the following compounds would be the least soluble in water?

2-propanone
2-hexanone
2-butanone
3-pentanone
2-pentanone

A

2-hexanone

41
Q

Name the following:

meta-chloroethylphenol
3-chloro-6-hydroxy ethylbenzene
4-chloro-6-ethylphenol
4-chloro-2-ethylphenol
3-ethyl-4-hydroxychlorobenzene

A

4-chloro-2-ethylphenol

42
Q

What is the product of oxidation of butanal?

butane
butanoic acid
1-butanol
2-butanol
no reaction

A

butanoic acid

43
Q

Which compound is the most soluble in water?

CH3CH2CH2OH
CH3CH2CH2CH2CH2CH2CH2CH3
CH3CH2CH2CH3
CH3CH2CH3
CH3CH2CH2CH2OH

A

CH3CH2CH2OH

Organic and Biochemistry (8 decks)

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