Question 1

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 2

Which of the following compounds is not a free radical initiator? ​

Accepted Answer

A)   Tert-butyl hydroperoxide
B)   Azoisobutyronitrile
C)   Peracetic acid
D)   Methyl iodideE) A) and B)
F) None of the above

Question 3

The following arrangement indicates a crosslinked polymer.

Accepted Answer

A) True 
 B)False  True

Question 4

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

Accepted Answer

A)   carbocation
B)   carbanion
C)   radical
D)   organometallic complexE) A) and C)
F) All of the above

Question 5

What type of polymer is shown?

Accepted Answer

A)   polycarbonate
B)   polyester
C)   polyurethane
D)   polyetherE) B) and D)
F) C) and D)

Question 6

2,4-Toluene diisocyanate is a very important chemical in the synthesis of polyurethanes used in foam pillows and freezer insulation and has the following structure.

Accepted Answer

A) True 
 B)False

Question 7

What is the name of the following polymer?

Accepted Answer

A)   poly(ethylene terephthalamide) 
B)   poly(ethylene terephthalate) 
C)   poly(ethylene succinate) 
D)   poly(ethylene phenylate) E) A) and B)
F) A) and C)

Question 8

Which term describes the arrangement of substituents on the segment of polypropylene shown below?

Accepted Answer

A)   atactic
B)   isotactic
C)   syndiotactic
D)   stereoirregularE) B) and C)
F) All of the above

Question 9

Consider the polymeric structure below for amylose (a type of starch).  The structure for the monomer is given below.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following is not true?

Accepted Answer

A)   crystalline polymers are more opaque than amorphous polymers
B)   thermoplastic polymers can be melted
C)   polymers become flexible above their Tg
D)   elastomers are elastic below TgE) B) and C)
F) None of the above D

Question 11

The name of the polymer formed by the molecule shown below is _________________.

Accepted Answer

The answer of The name of the polymer formed by...

Question 12

What type of intermediate is formed in the polymerization of isobutylene with BF3/H2O?

Accepted Answer

A)   carbocation
B)   carbanion
C)   radical
D)   radical anionE) None of the above
F) B) and C)

Question 13

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 cationic polymerization.

Accepted Answer

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

Question 14

Which type of polymerization is used to make high density polyethylene (HDPE) ?

Accepted Answer

A)   anionic
B)   cationic
C)   radical
D)   Ziegler-NattaE) B) and C)
F) C) and D)

Question 15

Which of the following combinations of terms best describes the polymerization of propene to form polypropylene?

Accepted Answer

A)   step growth addition
B)   step growth condensation
C)   chain growth addition
D)   chain growth condensationE) B) and C)
F) All of the above

Question 16

What type of polymer is shown?

Accepted Answer

A)   polyamide
B)   polyurea
C)   polyurethane
D)   polyamineE) B) and C)
F) A) and B)

Question 17

Which of the following cycloalkenes is least reactive toward ROMP?

Accepted Answer

A)  
B)  
C)  
D)  E) B) and C)
F) None of the above

Question 18

A good initiator for a free radical addition polymerization is acetyl chloride.

Accepted Answer

A) True 
 B)False

Question 19

Consider the following two structures.  The following represents the repeating unit of the polymer formed by these two substances.

Accepted Answer

A) True 
 B)False  True

Question 20

Which term describes the arrangement of substituents on the segment of polypropylene shown below?

Accepted Answer

A)   atactic
B)   isotactic
C)   syndiotactic
D)   stereoirregularE) B) and D)
F) A) and B)

Exam 29: Organic Polymer Chemistry

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

Correct AnswerverifiedShow Answer

Which of the following compounds is not a free radical initiator? ​

Correct AnswerverifiedShow Answer

The following arrangement indicates a crosslinked polymer.

Correct AnswerverifiedTrue

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

Correct AnswerverifiedShow Answer

What type of polymer is shown?

Correct AnswerverifiedShow Answer

2,4-Toluene diisocyanate is a very important chemical in the synthesis of polyurethanes used in foam pillows and freezer insulation and has the following structure.

Correct AnswerverifiedShow Answer

What is the name of the following polymer?

Correct AnswerverifiedShow Answer

Which term describes the arrangement of substituents on the segment of polypropylene shown below?

Correct AnswerverifiedShow Answer

Consider the polymeric structure below for amylose (a type of starch). The structure for the monomer is given below.

Correct AnswerverifiedShow Answer

Which of the following is not true?

Correct AnswerverifiedD

The name of the polymer formed by the molecule shown below is _________________.

Correct AnswerverifiedShow Answer

What type of intermediate is formed in the polymerization of isobutylene with BF3/H2O?

Correct AnswerverifiedShow Answer

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 cationic polymerization.

Correct AnswerverifiedShow Answer

Which type of polymerization is used to make high density polyethylene (HDPE) ?

Correct AnswerverifiedShow Answer

Which of the following combinations of terms best describes the polymerization of propene to form polypropylene?

Correct AnswerverifiedShow Answer

What type of polymer is shown?

Correct AnswerverifiedShow Answer

Which of the following cycloalkenes is least reactive toward ROMP?

Correct AnswerverifiedShow Answer

A good initiator for a free radical addition polymerization is acetyl chloride.

Correct AnswerverifiedShow Answer

Consider the following two structures. The following represents the repeating unit of the polymer formed by these two substances.

Correct AnswerverifiedTrue

Which term describes the arrangement of substituents on the segment of polypropylene shown below?

Correct AnswerverifiedShow Answer

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Which of the following compounds is not a free radical initiator?

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True

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D

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What type of intermediate is formed in the polymerization of isobutylene with BF₃/H₂O?

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True

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