Question 1

Which of the following best describes the polymer chain shown below?

Accepted Answer

A) Atactic polypropylene 
B) Isotactic polypropylene 
C) Syndiotactic polypropylene 
D) Cross-linked polypropylene 
A) Atactic polypropylene 
B) Isotactic polypropylene 
C) Syndiotactic polypropylene 
D) Cross-linked polypropylene

Question 2

Rank the following monomers (X,Y and Z)in order of increasing ability to undergo anionic polymerization,starting with the least reactive monomer.

Accepted Answer

A) Y< X < Z 
B) Z < Y < X 
C) X < Y < Z 
D) Y < Z < X 
A) Y< X < Z 
B) Z < Y < X 
C) X < Y < Z 
D) Y < Z < X

Question 3

What modification occurs when a small amount of p-divinylbenzene is added to the polymerization reaction of styrene to form polystyrene? (Recall that the vinyl group is -CH=CH2.)

Accepted Answer

A) Cross-linking of the polystyrene 
B) Isotactic stereochemistry of the polystyrene 
C) Syndiotactic stereochemistry of the polystyrene 
D) "Softening" of the polystyrene by a plasticizer 
A) Cross-linking of the polystyrene 
B) Isotactic stereochemistry of the polystyrene 
C) Syndiotactic stereochemistry of the polystyrene 
D) "Softening" of the polystyrene by a plasticizer

Question 4

Which of the following initiators is used to make isotactic polypropylene?

Accepted Answer

A) Benzoyl peroxide 
B) CH3CH2CH2CH2Li 
C) BF3 
D) Al(CH2CH3)3,TiCl4 
A) Benzoyl peroxide 
B) CH3CH2CH2CH2Li 
C) BF3 
D) Al(CH2CH3)3,TiCl4

Question 5

What is the name given to polymers with two or more different monomers?

Accepted Answer

A) Homopolymers 
B) Copolymers 
C) Block polymers 
D) Random polymers 
A) Homopolymers 
B) Copolymers 
C) Block polymers 
D) Random polymers

Question 6

Which of the following is the repeating unit of the polymer formed in the polymerization reaction shown below?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 7

What is the structure of the polymer which results when styrene is reacted with BF3 and H2O?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 8

Which of the following is the monomer that gives the polymer shown below?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 9

In which type of polymer are the chains packed less tightly together,resulting in lower melting points and a softer texture?

Accepted Answer

A) Isotactic polymers 
B) Syndiotactic polymers 
C) Atactic polymers 
D) Cross-linked polymers 
A) Isotactic polymers 
B) Syndiotactic polymers 
C) Atactic polymers 
D) Cross-linked polymers

Question 10

What are the structures of the three monomers needed to synthesize the following polymer?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 11

Which of the following monomers is used to make the polymer carbowax,shown below?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 12

Which one of the following monomers undergoes cationic polymerization most readily?

Accepted Answer

A) H2C=CH2 
B) H2C=CHCH3 
C) H2C=C(CH3)2 
D) H2C=CHCN 
A) H2C=CH2 
B) H2C=CHCH3 
C) H2C=C(CH3)2 
D) H2C=CHCN

Question 13

What is the name given to polymers with single monomers?

Accepted Answer

A) Homopolymers 
B) Copolymers 
C) Block polymers 
D) Random polymers 
A) Homopolymers 
B) Copolymers 
C) Block polymers 
D) Random polymers

Question 14

Which of the following is (are)addition polymer(s)? I.polypropylene
II)Teflon
III)nylon

Accepted Answer

A) Only I 
B) Only II 
C) Only III 
D) Both I and II 
A) Only I 
B) Only II 
C) Only III 
D) Both I and II

Question 15

Which of the following is the repeating unit of the polymer formed in the polymerization of p-hydroxybenzoic acid?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 16

Bakelite is formed by the acid-catalyzed polymerization of phenol with formaldehyde.What is (are)the product(s)of the first step in this polymerization,shown below? (Note: in the answers below the hydroxymethyl group is -CH2OH.)

Accepted Answer

A) Ortho and para-hydroxybenzaldehyde 
B) Meta-hydroxybenzaldehyde 
C) Ortho and para-(hydroxymethyl)phenol 
D) Meta-(hydroxymethyl)phenol 
A) Ortho and para-hydroxybenzaldehyde 
B) Meta-hydroxybenzaldehyde 
C) Ortho and para-(hydroxymethyl)phenol 
D) Meta-(hydroxymethyl)phenol

Question 17

What is the classification of the following polymer in which X and Y represent repeating units?

Accepted Answer

A) Block copolymer 
B) Homopolymer 
C) Alternating copolymer 
D) Random copolymer 
A) Block copolymer 
B) Homopolymer 
C) Alternating copolymer 
D) Random copolymer

Question 18

Identify the monomer(s)needed to make the following polyester.

Accepted Answer

A) 3-Hydroxybutanoic acid 
B) Butanedioic acid 
C) Butanedioic acid and ethylene glycol 
D) Butanedioic acid and ethanol 
A) 3-Hydroxybutanoic acid 
B) Butanedioic acid 
C) Butanedioic acid and ethylene glycol 
D) Butanedioic acid and ethanol

Question 19

What monomer(s)would be used to make the polyester shown below?

Accepted Answer

A) Butanedioic acid 
B) 4-Hydroxybutanal 
C) 4-Hydroxybutanoic acid 
D) Butanedioic acid and 1,4-butanediol 
A) Butanedioic acid 
B) 4-Hydroxybutanal 
C) 4-Hydroxybutanoic acid 
D) Butanedioic acid and 1,4-butanediol

Question 20

What type of polymer is Nylon?

Accepted Answer

A) Epoxy 
B) Polyurethane 
C) Polycarbonate 
D) Polyamide 
A) Epoxy 
B) Polyurethane 
C) Polycarbonate 
D) Polyamide

Exam 28: Synthetic Polymers

Which of the following best describes the polymer chain shown below?

Rank the following monomers (X,Y and Z)in order of increasing ability to undergo anionic polymerization,starting with the least reactive monomer.

What modification occurs when a small amount of p-divinylbenzene is added to the polymerization reaction of styrene to form polystyrene? (Recall that the vinyl group is -CH=CH2.)

Which of the following initiators is used to make isotactic polypropylene?

What is the name given to polymers with two or more different monomers?

Which of the following is the repeating unit of the polymer formed in the polymerization reaction shown below?

What is the structure of the polymer which results when styrene is reacted with BF3 and H2O?

Which of the following is the monomer that gives the polymer shown below?

In which type of polymer are the chains packed less tightly together,resulting in lower melting points and a softer texture?

What are the structures of the three monomers needed to synthesize the following polymer?

Which of the following monomers is used to make the polymer carbowax,shown below?

Which one of the following monomers undergoes cationic polymerization most readily?

What is the name given to polymers with single monomers?

Which of the following is (are)addition polymer(s)? I.polypropylene II)Teflon III)nylon

Which of the following is the repeating unit of the polymer formed in the polymerization of p-hydroxybenzoic acid?

Bakelite is formed by the acid-catalyzed polymerization of phenol with formaldehyde.What is (are)the product(s)of the first step in this polymerization,shown below? (Note: in the answers below the hydroxymethyl group is -CH2OH.)

What is the classification of the following polymer in which X and Y represent repeating units?

Identify the monomer(s)needed to make the following polyester.

What monomer(s)would be used to make the polyester shown below?

What type of polymer is Nylon?

Structure and Bonding

Acids and Bases

Introduction to Organic Molecules and Functional Groups

Alkanes

Stereochemistry

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols,ethers,and Related Compounds

Alkenes and Addition Reactions

Alkynes and Synthesis

Oxidation and Reduction

Radical Reactions

Conjugation, resonance, and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

Aldehydes and Ketones - Nucleophilic Addition

Carboxylic Acids and the Acidity of the O-H Bond

Carboxylic Acids and Their Derivatives - Nucleophilic Acyl Substitution

Substitution Reactions of Carbonyl Compounds at the a Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond-Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Lipids

Molecular Ion Peaks and Fragmentation Patterns

Analyzing Molecular Motion and Infrared Spectroscopy

Organic Spectroscopy Concepts

Filters

What modification occurs when a small amount of p-divinylbenzene is added to the polymerization reaction of styrene to form polystyrene? (Recall that the vinyl group is -CH=CH₂.)

What is the structure of the polymer which results when styrene is reacted with BF₃ and H₂O?

Bakelite is formed by the acid-catalyzed polymerization of phenol with formaldehyde.What is (are)the product(s)of the first step in this polymerization,shown below? (Note: in the answers below the hydroxymethyl group is -CH₂OH.)