Question 1

Which of the following polymers can be recycled?

Accepted Answer

A) poly(ethylene terephthalate) 
B) high density polyethylene 
C) poly(vinyl chloride) 
D) A and B 
E) all of the above 
A) poly(ethylene terephthalate) 
B) high density polyethylene 
C) poly(vinyl chloride) 
D) A and B 
E) all of the above D

Question 2

Provide the structure of poly(tetrafluoroethylene).

Accepted Answer

The answer of Provide the structure of poly(tetrafluoroethylene)....

Question 3

What are common factors that enter into the choice of radical initiators for chain-growth polymerization?

Accepted Answer

1.A relatively weak bond like the oxygen-oxygen single bond 2.Desired solubility of the initiator 3.Temperature of the polymerization reaction

Question 4

Identify the product of the following reaction.

Accepted Answer

A) nylon 44 
B) nylon 6 
C) nylon 4 
D) nylon 66 
E) nylon 55 
A) nylon 44 
B) nylon 6 
C) nylon 4 
D) nylon 66 
E) nylon 55

Question 5

Which of the following polymers is being used in medical applications such as sutures,stents etc.

Accepted Answer

A) poly(ethylene terephthalate) 
B) poly(vinylchloride) 
C) polylactides 
D) polyhydroxyalkanoates 
E) NyloN 66 
A) poly(ethylene terephthalate) 
B) poly(vinylchloride) 
C) polylactides 
D) polyhydroxyalkanoates 
E) NyloN 66

Question 6

Draw the monomer for poly(vinyl acetate).

Accepted Answer

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

Question 7

What structural characteristic is shared by compounds used as radical initiators?

Accepted Answer

Such compounds posse

Question 8

Provide a mechanism to show how H2C   C(CH3)2 is polymerized using BF3 as the initiator.

Accepted Answer

Question 9

List the two main groups of polymers and give one example of each.

Accepted Answer

Polymers are divided into two

Question 10

Identify the monomer(s)that undergo radical polymerization.You may choose more than one answer.

Accepted Answer

A) styrene 
B) methyl methacrylate 
C) vinyl chloride 
D) methyl vinyl ether 
E) acrylamide 
A) styrene 
B) methyl methacrylate 
C) vinyl chloride 
D) methyl vinyl ether 
E) acrylamide

Question 11

Explain why some monomers are better able to undergo chain-growth polymerization by a radical mechanism.

Accepted Answer

A monomer with a substituent (

Question 12

Identify the initiator in an anionic polymerization.

Accepted Answer

A) KOH 
B) BuLi 
C) CH3OOCH3 
D) BF3,H2O 
E) HCl 
A) KOH 
B) BuLi 
C) CH3OOCH3 
D) BF3,H2O 
E) HCl

Question 13

What is the main structural difference between high-density and low-density polyethylene,and how does this structural difference affect the properties and uses of these polymers?

Accepted Answer

High-density polyethylene is linear whil

Question 14

Identify the initiator in a radical polymerization.

Accepted Answer

A) KOH 
B) BuLi 
C) CH3OOCH3 
D) BF3,H2O 
E) HCl 
A) KOH 
B) BuLi 
C) CH3OOCH3 
D) BF3,H2O 
E) HCl

Question 15

Provide the structure of the monomer from which Orlon [poly(acrylonitrile)] is prepared.

Accepted Answer

The answer of Provide the structure of the monomer from...

Question 16

Which of the following are characteristics of thermosetting polymers?

Accepted Answer

A) strong and rigid 
B) high degree of cross-linking 
C) can be remelted by heating 
D) A and B 
E) A,B,and C 
A) strong and rigid 
B) high degree of cross-linking 
C) can be remelted by heating 
D) A and B 
E) A,B,and C

Question 17

Which of the following polymers is used in bullet-proof vests?

Accepted Answer

A) Nylon 66 
B) Kevlar 
C) Mylar 
D) Lexan 
E) Teflon 
A) Nylon 66 
B) Kevlar 
C) Mylar 
D) Lexan 
E) Teflon

Question 18

Identify the monomer(s)that undergo anionic polymerization.You may choose more than one answer.

Accepted Answer

A) styrene 
B) methyl methacrylate 
C) vinyl chloride 
D) methyl vinyl ether 
E) acrylamide 
A) styrene 
B) methyl methacrylate 
C) vinyl chloride 
D) methyl vinyl ether 
E) acrylamide

Question 19

The pattern below is found in what type of polymer? AABBBABAABABBAAB

Accepted Answer

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

Question 20

What is the mass of each repeating unit in poly(ethylene)?

Accepted Answer

The answer of What is the mass of each repeating...

Exam 27: Synthetic Polymers

Which of the following polymers can be recycled?

Provide the structure of poly(tetrafluoroethylene).

What are common factors that enter into the choice of radical initiators for chain-growth polymerization?

Identify the product of the following reaction.

Which of the following polymers is being used in medical applications such as sutures,stents etc.

Draw the monomer for poly(vinyl acetate).

What structural characteristic is shared by compounds used as radical initiators?

Provide a mechanism to show how H2C C(CH3)2 is polymerized using BF3 as the initiator.

List the two main groups of polymers and give one example of each.

Identify the monomer(s)that undergo radical polymerization.You may choose more than one answer.

Explain why some monomers are better able to undergo chain-growth polymerization by a radical mechanism.

Identify the initiator in an anionic polymerization.

What is the main structural difference between high-density and low-density polyethylene,and how does this structural difference affect the properties and uses of these polymers?

Identify the initiator in a radical polymerization.

Provide the structure of the monomer from which Orlon [poly(acrylonitrile)] is prepared.

Which of the following are characteristics of thermosetting polymers?

Which of the following polymers is used in bullet-proof vests?

Identify the monomer(s)that undergo anionic polymerization.You may choose more than one answer.

The pattern below is found in what type of polymer? AABBBABAABABBAAB

What is the mass of each repeating unit in poly(ethylene)?

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds: Nomenclature, physical Properties, and Structure

Isomers: the Arrangement of Atoms in Space

Alkenes: Structure,nomenclature,and an Introduction to Reactivity - Thermodynamics and Kinetics

The Reactions of Alkenes - the Stereochemistry of Addition Reactions

The Reactions of Alkynes - Introduction to Multistep Synthesis

Delocalized Electrons: Their Effect on Stability, pka, and the Products of a Reaction - Aromaticity and Electronic Effects: an Introduction to the Reactions of Benzene

Substitution and Elimination Reactions of Alkyl Halides

Reactions of Alcohols, ethers, epoxides, amines and Sulfur-Containing Compounds

Organometallic Compounds

Radicals

Mass Spectrometry,infrared Spectroscopy,and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions at the Α-Carbon

Reactions of Benzene and Substituted Benzenes

More About Amines - Reactions of Heterocylic Compounds

The Organic Chemistry of Carbohydrates

Amino Acids,peptides,and Proteins

Catalysis in Organic Reactions and in Enzymatic Reactions

The Organic Chemistry of the Coenzymes, compounds Derived From Vitamins

The Organic Chemistry of the Metabolic Pathways

The Organic Chemistry of Lipids

The Chemistry of the Nucleic Acids

Pericyclic Reactions

Filters

Provide a mechanism to show how H₂C C(CH₃)₂ is polymerized using BF₃ as the initiator.