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Chem II > ch 23 pt 2 > Flashcards

ch 23 pt 2 Flashcards

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1
Q

Which one of the following functional groups is a base?
aldehyde
alcohol
carboxylic acid
ether
amine

A

e

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2
Q

Which of the following functional groups does not contain an oxygen atom?
Ester
Ether
Aldehyde
Amide
Amine

A

not d. or b or a.

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3
Q

Which of the following statements is/are CORRECT?
1. Thermoplastics are a class of polymers that will not decompose at temperatures as great as 700 °C.
2. Thermosetting plastics harden when heated, but they regain their elasticity when cooled.
3. Elastomers are materials that spring back to their original shape when stretched.

A

c.

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4
Q

Polyvinyl chloride is used in raincoats and pipes. It is produced by the addition reaction of chloroethylene, CH2CHCl. What is the structure of the polymer produced in this reaction?

A

e.

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5
Q

In vulcanized rubber, the polymer chains of natural rubber are cross-linked with sulfur atoms. The polymer chains stretch when stressed, but they return to their original shape when the stress is removed. Substances that behave this way are called ________.

A

elastomers

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6
Q

Which of the following reactions is a substitution reaction?
C6H6 + Cl2 → C6H5Cl + HCl
CH2=CH2 + Cl2 → CH2ClCH2Cl
CH2=CH2 + HCl → CH3CH2Cl
CH2=CH2 + H2 → CH3CH3
HC
CH + 2Cl2 → CHCl2CHCl2

A

a.

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7
Q

What is the product of the addition of HCl to ethylene?
chloroethane
chloroethylene
1,2-dichloroethane
1,1-dichloroethane
1,1,2,2-tetrachloroethylene

A

a

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8
Q

The hydrolysis of an ester in the presence of NaOH produces
a carboxylate salt of sodium and an alcohol.
an ether and an amide.
an alcohol and an amine.
an aldehyde and an ether.
an ether and a carboxylate salt of sodium.

A

a.

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9
Q

A mixture of ethanol and benzoic acid is heated in the presence of an acid. Which of the following is the primary product of this reaction?

A

c.

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10
Q

Which of the following chemical equations depicts a halogenation reaction with benzene?
C6H6() + 3 Br2(g) → 3 C2H2Br2(g)
C6H6() + Cl2(g) → C6H5Cl() + HCl(g)
C6H6() + CH3I(g) → C6H5CH3() + HI(g)
C6H6() + Cl2(g) → C6H4Cl2() + H2(g)
C6H6() + 3 Br2(g) → 6 C6H6Br6(g)

A

b

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11
Q

hen a secondary alcohol is oxidized, the product is a(n) ____.
ketone
ether
ester
aldehyde
amide

A

not b.

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12
Q

Which of the following statements concerning methanol is/are correct?
1. Methanol is used as a fuel in high-powered racing cars.
2. Human consumption of methanol can lead to blindness.
3. Methanol is converted by the human body to formaldehyde and formic acid.
1 only
2 only
3 only
1 and 3
1, 2, and 3

A

not a or d.

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13
Q

Which of the following alkenes is capable of forming cis-trans isomers?
(CH3)2 = CH2
(CH3)2 = CHBr
CH3CH = CH2
CH3CH = CBr2
CHBr = CHD

A

e.

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14
Q

Which functional group does not contain a double bond to an oxygen atom?
ester
aldehyde
ether
amide
ketone

A

c

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15
Q

Reduction of a ketone produces a(n) _____.
alkane
amide
amine
secondary alcohol
primary alcohol

A

d

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16
Q

Which of the following statements concerning structural isomers is/are correct?
1. Structural isomers have the same elemental composition, but the atoms are linked in different ways.
2. Structural isomers have identical physical properties, but different chemical properties.
3. Structural isomers have identical structures, but contain different isotopes of the same elements.

A

A.

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17
Q

Low density polyethylene (LDPE) is most likely to be used in
sandwich bags.
bottle caps.
rigid pipes.
contact lenses.
fabrics and apparel.

A

a.

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18
Q

The process by which long chain hydrocarbons in petroleum are shortened is called ________.

A

cracking

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19
Q

Which of the following compounds might be used to reduce a carboxylic acid to an aldehyde?
H+
Cl2
K2Cr2O7
KMnO4
NaBH4

A

e.

20
Q

When sulfur is added to rubber and the mixture is heated, the resulting rubber is still elastic but much stronger. This process is called
addition polymerization
isomerization
oligomerization
vulcanization
halogenation

A

d.

21
Q

Which of the following noncyclic hydrocarbons has two π bonds?
C3H4
C4H8
C6H12
C7H14
C8H18

A

a

22
Q

What are the products of a condensation reaction between a primary amine and a carboxylic acid?
water and an amide
water and an ester
ammonia and an amide
ammonia and an ester
an ammonium cation and a carboxylate anion

A

a.

23
Q

Molecules with nonsuperimposable mirror images are termed chiral. Pairs of nonsuperimposable, mirror image molecules are called ________.

A

enantiomers

24
Q

Which of the following statements is/are CORRECT?
1. Polyethylene forms by the addition reaction of C2H4 molecules.
2. Copolymers form by the polymerization of two (or more) different monomers.
3. A condensation reaction involves reacting two monomers and splitting out a small molecule, often water.

A

d

25
Q

When an aldehyde is oxidized, the product is a(n) ____.

A

e

26
Q

What is the product of the reduction of butanone?

A

not e or d or c

27
Q

The reaction of methane with chlorine in the presence of ultraviolet radiation can produce ____.

A

e

28
Q

The reaction of 1-propanol with K2Cr2O7 in acidic solution to produce propanal is what kind of reaction?

A

c.

29
Q

An aldehyde may be produced by the oxidation of a(n) _____.

A

c

30
Q

Which of the following class of compounds is responsible for many of the distinctive odors of artificial flavors and perfumes?
Ethers
Aldehydes
Esters
Amides
Alkenes

A

c

31
Q

A peptide bond is the amide linkage that is formed in a condensation reaction involving the __________ group of one amino acid with the carboxylic acid group of a second amino acid.

A

amine

32
Q

When a secondary alcohol is oxidized, the product is a(n) ____.

A

a

33
Q
A
34
Q

Which of the following is the product of the addition of excess F2 to acetylene?
1,2-difluoroethane
Ethylene
1,1,2,2-tetrafluoroethane
Ethane
1,1-difluoroethylen

A

not a.

35
Q

The functional group RCONR’ is characteristic of a(n) ____.

A

c.

36
Q

Which of the following chemical equations depicts an alkylation reaction?

A

a.

37
Q

Putrescine and cadaverine are two compounds associated with decaying flesh or bad breath. These compounds belong to a class of molecules called ____.

A

b

38
Q

What is the balanced chemical equation for the combustion of 4-methyl-1-pentene?

A

not c or b or a

39
Q

Which one of the following molecules has a chiral center?

A

not b. or a.

40
Q

Which of the following alcohols is least likely to be soluble in water?

A

a.

41
Q

Which one of the following hydrocarbons has cis and trans isomers?

A

e.

42
Q

Which of the following compounds might be used to oxidize an aldehyde to a carboxylic acid?

A

d.

43
Q

What is the name of the product of the reaction that occurs when a mixture of methanol and propionic acid is heated in the presence of acid?

A

not c or b.

44
Q

The addition of Br2 is used as the reaction to distinguish between alkanes and alkenes. What is the observation that accompanies this test?

A

c

45
Q

Which of the following statements concerning isomers is/are correct?
1. Two types of stereoisomers exist: geometric isomers and optical isomers.
2. Optical isomers are molecules with nonsuperimposable mirror images.
3. Ethanol (CH3CH2OH) and dimethyl ether (CH3OCH3) are examples of geometric isomers.

A

d

46
Q

Which of the following formulas represents an unsaturated hydrocarbon?

A

d

47
Q
A

Chem II (13 decks)

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