Question 1

Which of the following monomers could produce atactic,isotactic,and syndiotactic polymers?

Accepted Answer

A) H2C=CH2 
B) H2C=CClH 
C) H2C=CCl2 
D) Cl2C=CCl2 
A) H2C=CH2 
B) H2C=CClH 
C) H2C=CCl2 
D) Cl2C=CCl2

Question 2

Consider the following diagram representing crystallites.   Which type of polymer is represented?

Accepted Answer

A) thermoplastic 
B) fiber 
C) elastomer 
D) thermosetting resins 
A) thermoplastic 
B) fiber 
C) elastomer 
D) thermosetting resins

Question 3

Within a crystallite,the polymer chains are held together by:

Accepted Answer

A) disuflide bridges 
B) hydrogen bonds 
C) van der Walls forces 
D) covalent bonds 
A) disuflide bridges 
B) hydrogen bonds 
C) van der Walls forces 
D) covalent bonds

Question 4

Exhibit 31-2
Draw the structure(s) of the monomer(s) used to make each of the following polymers.
-Draw:

Accepted Answer

The answer of Exhibit 31-2
Draw the structure(s) of the monomer(s)...

Question 5

Exhibit 31-1
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.

-____ Small organic molecules that act as lubricants between polymer chains.

Accepted Answer

A) BF3 + H2O 
B) elastomer 
C) chain-growth polymer 
D) AL(CH2CH3)3 + TiCl4 
E)   
F)  
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O) 
P)  
A) BF3 + H2O 
B) elastomer 
C) chain-growth polymer 
D) AL(CH2CH3)3 + TiCl4 
E)   
F)  
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O) 
P)

Question 6

Do you expect nitroethylene to be more or less reactive than ethylene toward anionic polymerization? Explain.

Accepted Answer

Vinyl monomers with electron-withdrawing

Question 7

Exhibit 31-2
Draw the structure(s) of the monomer(s) used to make each of the following polymers.
-Draw:

Accepted Answer

The answer of Exhibit 31-2
Draw the structure(s) of the monomer(s)...

Question 8

Exhibit 31-2
Draw the structure(s) of the monomer(s) used to make each of the following polymers.
-Draw:

Accepted Answer

The answer of Exhibit 31-2
Draw the structure(s) of the monomer(s)...

Question 9

Exhibit 31-1
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.

-____ Bakelite is this type of polymer.

Accepted Answer

A) BF3 + H2O 
B) elastomer 
C) chain-growth polymer 
D) AL(CH2CH3)3 + TiCl4 
E)   
F)  
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O) 
P)  
A) BF3 + H2O 
B) elastomer 
C) chain-growth polymer 
D) AL(CH2CH3)3 + TiCl4 
E)   
F)  
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O) 
P)

Question 10

Classify the following polymer.

Accepted Answer

A) isotactic 
B) syndiotactic 
C) atactic 
A) isotactic 
B) syndiotactic 
C) atactic

Question 11

Monomer A is copolymerized with Monomer B and is found to have the following structure:   The type of copolymer formed is:

Accepted Answer

A) a random copolymer 
B) an alternating copolymer 
C) a block copolymer 
D) a graft copolymer 
A) a random copolymer 
B) an alternating copolymer 
C) a block copolymer 
D) a graft copolymer

Question 12

Exhibit 31-1
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) BF3 + H2O 
B) elastomer 
C) chain-growth polymer 
D) AL(CH2CH3)3 + TiCl4 
E)   
F)  
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O) 
P)  
A) BF3 + H2O 
B) elastomer 
C) chain-growth polymer 
D) AL(CH2CH3)3 + TiCl4 
E)   
F)  
G)thermoplastic
H)homopolymer
I)plasticizers
J)thermosetting resins
K)copolymers
L)step-growth polymer
M)Grubb's catalyst
N)metallacycle
O) 
P)

Question 13

Rank the following monomers in order of increasing reactivity toward anionic polymerization (least reactive to most reactive).

Accepted Answer

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

Exam 31: Synthetic Polymers

Which of the following monomers could produce atactic,isotactic,and syndiotactic polymers?

Consider the following diagram representing crystallites. Which type of polymer is represented?

Within a crystallite,the polymer chains are held together by:

Exhibit 31-2 Draw the structure(s) of the monomer(s) used to make each of the following polymers. -Draw:

Exhibit 31-1 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. -____ Small organic molecules that act as lubricants between polymer chains.

Do you expect nitroethylene to be more or less reactive than ethylene toward anionic polymerization? Explain.

Exhibit 31-2 Draw the structure(s) of the monomer(s) used to make each of the following polymers. -Draw:

Exhibit 31-2 Draw the structure(s) of the monomer(s) used to make each of the following polymers. -Draw:

Exhibit 31-1 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. -____ Bakelite is this type of polymer.

Classify the following polymer.

Monomer A is copolymerized with Monomer B and is found to have the following structure: The type of copolymer formed is:

Rank the following monomers in order of increasing reactivity toward anionic polymerization (least reactive to most reactive).

Structure and Bonding

Polar Covalent Bonds;acids and Bases

Organic Compounds: Alkanes and Their Stereochemistry

Organic Compounds: Cycloalkanes and Their Stereochemistry

Stereochemistry at Tetrahedral Centers

An Overview of Organic Reactions

Par 1

Alkenes: Structure and Reactivity

Alkenes: Reactions and Synthesis

Alkynes: an Introduction to Organic Synthesis

Organohalides

Reactions of Alkyl Halides: Nucleophilic Substitutions and Eliminations

Par 2

Structure Determination: Mass Spectrometry and Infrared Spectroscopy

Structure Determination: Nuclear Magnetic Resonance Spectroscopy

Conjugated Compounds and Ultraviolet Spectroscopy

Par 3

Benzene and Aromaticity

Chemistry of Benzene: Electrophilic Aromatic Substitution

Alcohols and Phenols

Ethers and Epoxides;thiols and Sulfides

Aldehydes and Ketones: Nucleophilic Addition Reactions

Par 4

Carboxylic Acids and Nitriles

Carboxylic Acid Derivatives: Nucleophilic Acyl Substitution Reactions

Carbonyl Alpha-Substitution Reactions

Carbonyl Condensation Reactions

Par 5

Amines and Heterocycles

Biomolecules: Carbohydrates

Biomolecules: Amino Acids,peptides,and Proteins

Par 7

Biomolecules: Lipids

Biomolecules: Nucleic Acids

The Organic Chemistry of Metabolic Pathways

Orbitals and Organic Chemistry: Pericyclic Reactions

Par 1

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