Question 1

Provide the structure of azoisobutyronitrile, AIBN, and show the mechanism whereby it undergoes thermal decomposition to give two radicals and a molecule of N2.

Accepted Answer

Question 2

Which type of polymerization can be used to polymerize isobutylene, (CH3)2C=CH2?

Accepted Answer

A)  anionic 
B)  cationic 
C)  radical 
D)  Ziegler-Natta 
A)  anionic 
B)  cationic 
C)  radical 
D)  Ziegler-Natta

Question 3

Classify each polymer below as step-growth or chain-growth. Place the appropriate term in the blank provide
-_________________

Accepted Answer

The answer of Classify each polymer below as step-growth or...

Question 4

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
-____ a Ziegler-Natta catalyst

Accepted Answer

A) crystallite 
B) elastomer 
C) chain-growth polymer 
D) Al(CH2CH3)3 + TiCl4 
E)  
F) 
G)thermoplastic
H)homopolymer
I)Tm
J)epoxy resins
K)copolymers
L)step-growth polymer
M)"catalyst"
N)Tg
O) 
P)  ​
​ 
A) crystallite 
B) elastomer 
C) chain-growth polymer 
D) Al(CH2CH3)3 + TiCl4 
E)  
F) 
G)thermoplastic
H)homopolymer
I)Tm
J)epoxy resins
K)copolymers
L)step-growth polymer
M)"catalyst"
N)Tg
O) 
P)  ​
​

Question 5

Which of the following combinations of terms best describes the polymerization of a diisocyanate (OCN−R−NCO) and a diol to form a polyurethane?

Accepted Answer

A)  step growth addition 
B)  step growth condensation 
C)  chain growth addition 
D)  chain growth condensation 
A)  step growth addition 
B)  step growth condensation 
C)  chain growth addition 
D)  chain growth condensation

Question 6

Ziegler-Natta catalysts, used to prepare linear polymer molecules, consist of: organoaluminum compounds and transition metal salts.

Accepted Answer

A) True 
 B)False

Question 7

Consider the structure given below which might be found in a protein.   Answer the following questions by filling in the blank with the appropriate word or term.
-Nitroethylene is expected to be _______ reactive than ethylene toward anionic polymerization.

Accepted Answer

The answer of Consider the structure given below which might...

Question 8

Consider the structure shown below.   This is an example of

Accepted Answer

A)  a polyurethane 
B)  a polyester 
C)  a polyamide 
D)  a polycarbonate 
A)  a polyurethane 
B)  a polyester 
C)  a polyamide 
D)  a polycarbonate

Question 9

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
-____ Amorphous polymers that have the ability to stretch out and spring back to their original shape.

Accepted Answer

A) crystallite 
B) elastomer 
C) chain-growth polymer 
D) Al(CH2CH3)3 + TiCl4 
E)  
F) 
G)thermoplastic
H)homopolymer
I)Tm
J)epoxy resins
K)copolymers
L)step-growth polymer
M)"catalyst"
N)Tg
O) 
P)  ​
​ 
A) crystallite 
B) elastomer 
C) chain-growth polymer 
D) Al(CH2CH3)3 + TiCl4 
E)  
F) 
G)thermoplastic
H)homopolymer
I)Tm
J)epoxy resins
K)copolymers
L)step-growth polymer
M)"catalyst"
N)Tg
O) 
P)  ​
​

Question 10

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
-____ Produced by reactions in which each bond in the polymer is formed independently of the others.

Accepted Answer

A) crystallite 
B) elastomer 
C) chain-growth polymer 
D) Al(CH2CH3)3 + TiCl4 
E)  
F) 
G)thermoplastic
H)homopolymer
I)Tm
J)epoxy resins
K)copolymers
L)step-growth polymer
M)"catalyst"
N)Tg
O) 
P)  ​
​ 
A) crystallite 
B) elastomer 
C) chain-growth polymer 
D) Al(CH2CH3)3 + TiCl4 
E)  
F) 
G)thermoplastic
H)homopolymer
I)Tm
J)epoxy resins
K)copolymers
L)step-growth polymer
M)"catalyst"
N)Tg
O) 
P)  ​
​

Question 11

What type of intermediate is formed in the polymerization of styrene with butyllithium?

Accepted Answer

A)  carbocation 
B)  carbanion 
C)  radical 
D)  radical anion 
A)  carbocation 
B)  carbanion 
C)  radical 
D)  radical anion

Question 12

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
-____ Characteristic of crystallites

Accepted Answer

A) crystallite 
B) elastomer 
C) chain-growth polymer 
D) Al(CH2CH3)3 + TiCl4 
E)  
F) 
G)thermoplastic
H)homopolymer
I)Tm
J)epoxy resins
K)copolymers
L)step-growth polymer
M)"catalyst"
N)Tg
O) 
P)  ​
​ 
A) crystallite 
B) elastomer 
C) chain-growth polymer 
D) Al(CH2CH3)3 + TiCl4 
E)  
F) 
G)thermoplastic
H)homopolymer
I)Tm
J)epoxy resins
K)copolymers
L)step-growth polymer
M)"catalyst"
N)Tg
O) 
P)  ​
​

Question 13

Provide the structure of poly(methyl methacrylate).

Accepted Answer

The answer of Provide the structure of poly(methyl methacrylate)....

Question 14

Provide the structure of poly(ethylene succinate).

Accepted Answer

The answer of Provide the structure of poly(ethylene succinate)....

Question 15

Rubber materials must have low _____ to behave as elastomers.

Accepted Answer

glass tran

Question 16

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.
-____ Absent in amorphous domains

Accepted Answer

A) crystallite 
B) elastomer 
C) chain-growth polymer 
D) Al(CH2CH3)3 + TiCl4 
E)  
F) 
G)thermoplastic
H)homopolymer
I)Tm
J)epoxy resins
K)copolymers
L)step-growth polymer
M)"catalyst"
N)Tg
O) 
P)  ​
​ 
A) crystallite 
B) elastomer 
C) chain-growth polymer 
D) Al(CH2CH3)3 + TiCl4 
E)  
F) 
G)thermoplastic
H)homopolymer
I)Tm
J)epoxy resins
K)copolymers
L)step-growth polymer
M)"catalyst"
N)Tg
O) 
P)  ​
​

Question 17

What type of polymer is shown?

Accepted Answer

A)  polycarbonate 
B)  polyester 
C)  polyurethane 
D)  polyether 
A)  polycarbonate 
B)  polyester 
C)  polyurethane 
D)  polyether

Question 18

Consider the structure given below which might be found in a protein.   Answer the following questions by filling in the blank with the appropriate word or term.
-The number of types of monomers in this structure is _______.

Accepted Answer

The answer of Consider the structure given below which might...

Question 19

A polymer has the repeating unit drawn below:   The two monomers used to make the polymer are shown below.

Accepted Answer

A) True 
 B)False

Question 20

Provide the mechanism whereby two radical chain ends undergo dispropotionation to give two dead chain ends.

Accepted Answer

The answer of Provide the mechanism whereby two radical chain...

Exam 29: Organic Polymer Chemistry

Provide the structure of azoisobutyronitrile, AIBN, and show the mechanism whereby it undergoes thermal decomposition to give two radicals and a molecule of N2.

Which type of polymerization can be used to polymerize isobutylene, (CH3)2C=CH2?

Classify each polymer below as step-growth or chain-growth. Place the appropriate term in the blank provide -_________________

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes. -____ a Ziegler-Natta catalyst

Which of the following combinations of terms best describes the polymerization of a diisocyanate (OCN−R−NCO) and a diol to form a polyurethane?

Ziegler-Natta catalysts, used to prepare linear polymer molecules, consist of: organoaluminum compounds and transition metal salts.

Consider the structure given below which might be found in a protein. Answer the following questions by filling in the blank with the appropriate word or term. -Nitroethylene is expected to be _______ reactive than ethylene toward anionic polymerization.

Consider the structure shown below. This is an example of

What type of intermediate is formed in the polymerization of styrene with butyllithium?

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes. -____ Characteristic of crystallites

Provide the structure of poly(methyl methacrylate).

Provide the structure of poly(ethylene succinate).

Rubber materials must have low _____ to behave as elastomers.

MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes. -____ Absent in amorphous domains

What type of polymer is shown?

Consider the structure given below which might be found in a protein. Answer the following questions by filling in the blank with the appropriate word or term. -The number of types of monomers in this structure is _______.

A polymer has the repeating unit drawn below: The two monomers used to make the polymer are shown below.

Provide the mechanism whereby two radical chain ends undergo dispropotionation to give two dead chain ends.

Covalent Bonding and Shapes of Molecules

Alkanes and Cycloalkanes

Stereoisomerism and Chirality

Acids and Bases

Alkenes: Bonding, Nomenclature, and Properties

Reactions of Alkenes

Alkynes

Haloalkanes, Halogenation, and Radical Reactions

Nucleophilic Substitution and Beta-Elimination

Alcohols

Ethers, Epoxides, and Sulfides

Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Mass Spectrometry

An Introduction to Organometallic Compounds

Aldehydes and Ketones

Carboxylic Acids

Functional Derivatives of Carboxylic Acids

Enolate Anions and Enamines

Dienes, Conjugated Systems, and Pericyclic Reactions

Benzene and the Concept of Aromaticity

Reactions of Benzene and Its Derivatives

Amines

Catalytic Carbon-Carbon Bond Formation

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids

Filters

Provide the structure of azoisobutyronitrile, AIBN, and show the mechanism whereby it undergoes thermal decomposition to give two radicals and a molecule of N₂.

Which type of polymerization can be used to polymerize isobutylene, (CH₃)₂C=CH₂?