Question 1

Molecules add across multiple bonds in another molecule in addition reactions

Accepted Answer

A) True 
 B)False

Question 2

Predict the major product for the reaction: 2-methyl-2-pentene + HCl →

Accepted Answer

A)  (CH3)2CHCHClCH2CH3 
B)  CH2=C(CH3)CHClCH2CH3 
C)  (CH3)2CClCCl=CHCH3 
D)  (CH3)2CClCH2CH2CH3 
E)  no reaction 
A)  (CH3)2CHCHClCH2CH3 
B)  CH2=C(CH3)CHClCH2CH3 
C)  (CH3)2CClCCl=CHCH3 
D)  (CH3)2CClCH2CH2CH3 
E)  no reaction

Question 3

Synthesis of alkanes from alkyl halides is a typical example of E2 reaction.

Accepted Answer

A) True 
 B)False

Question 4

What is the difference between atactic polymer and isotactic polymer?

Accepted Answer

A)  Atactic polymer has an irregular structure while in isotactic polymer identical functional groups have the same orientation on the polymer chain. 
B)  Atactic polymer has a regular zig-zag structure while in isotactic polymer identical functional groups have the same orientation on the polymer chain. 
C)  Atactic polymer has the same functional groups on one side of the polymer structure while in isotactic polymer has random distribution of functional groups in its structure. 
D)  Atactic polymer has an irregular structure while in isotactic polymer identical functional alternate back and forth along the polymer chain. 
E)  Atactic polymer has identical functional groups alternating back and forth along the polymer chain while in isotactic polymer identical functional groups have the same orientation on the polymer chain. 
A)  Atactic polymer has an irregular structure while in isotactic polymer identical functional groups have the same orientation on the polymer chain. 
B)  Atactic polymer has a regular zig-zag structure while in isotactic polymer identical functional groups have the same orientation on the polymer chain. 
C)  Atactic polymer has the same functional groups on one side of the polymer structure while in isotactic polymer has random distribution of functional groups in its structure. 
D)  Atactic polymer has an irregular structure while in isotactic polymer identical functional alternate back and forth along the polymer chain. 
E)  Atactic polymer has identical functional groups alternating back and forth along the polymer chain while in isotactic polymer identical functional groups have the same orientation on the polymer chain.

Question 5

Which of the following statements correctly describe the step-reaction polymerization? 
I. It is also called condensation polymerization.
II. It produces polymers of moderately high molecular masses.
III. It requires that monomers have functional groups that can join together.
IV. This type of polymerization is fast.
V. It is accompanied with the addition of a small molecule.

Accepted Answer

A)  I), II) and III) 
B)  I), and II) 
C)  II), III) and IV) 
D)  III), IV) and V) 
E)  II), IV) and V) 
A)  I), II) and III) 
B)  I), and II) 
C)  II), III) and IV) 
D)  III), IV) and V) 
E)  II), IV) and V)

Question 6

Identify substituents that are meta directors in electrophilic aromatic substitution. 
I. -OR
II. -NO2
III. -OCOCH3
IV. -CHO
V. -COOH

Accepted Answer

A)  I), II) and V). 
B)  II), IV), and V). 
C)  I), IV), and V) 
D)  II), IV), and V) 
E)  I), III), and V) 
A)  I), II) and V). 
B)  II), IV), and V). 
C)  I), IV), and V) 
D)  II), IV), and V) 
E)  I), III), and V)

Question 7

We can promote SN2 over SN1 reactions if we: 
I. use a substrate that gives a primary carbocation and not tertiary carbocation
II. use a sterically hindered substrate
III. use a polar protic solvent

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  I and III 
E)  II and III 
A)  I 
B)  II 
C)  III 
D)  I and III 
E)  II and III

Question 8

Which reagents would you use for the following transformations?

Accepted Answer

A)  First H2O/H3O+ then conc. H2SO4 
B)  First H2O/H3O+ then conc. HCl 
C)  First OH- then conc. H2SO4 
D)  First OH- then conc. HCl 
E)  First H2O/H3O+ then dilute H2SO4 
A)  First H2O/H3O+ then conc. H2SO4 
B)  First H2O/H3O+ then conc. HCl 
C)  First OH- then conc. H2SO4 
D)  First OH- then conc. HCl 
E)  First H2O/H3O+ then dilute H2SO4

Question 9

Find a group that is a ortho,para director in electrophilic aromatic substitution.

Accepted Answer

A)  -NO2 
B)  -SO3H 
C)  -OH 
D)  -COH 
E)  -COOCH3 
A)  -NO2 
B)  -SO3H 
C)  -OH 
D)  -COH 
E)  -COOCH3

Question 10

Predict major products for chlorination of the following three aromatic compounds:

Accepted Answer

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

Question 11

Give the product(s) of the reaction (in H2SO4) : CH2=CHCH3 + H2O → product(s)

Accepted Answer

A)  CH2OHCH(OH)CH3 
B)  CH2OHCH2CH3 
C)  CH2OHCHOHCH3 + H2 
D)  CH3CH2CH3 + H2O2 
E)  CH3CH(OH)CH3 
A)  CH2OHCH(OH)CH3 
B)  CH2OHCH2CH3 
C)  CH2OHCHOHCH3 + H2 
D)  CH3CH2CH3 + H2O2 
E)  CH3CH(OH)CH3

Question 12

Which of the following steps can be found in any of the polymerization mechanisms you learned? 
I. initiation
II. condensation
III. propagation
IV. dehydrohalogenation
V. rearrangement

Accepted Answer

A)  I), III), V) 
B)  II), III) and IV) 
C)  III), IV), and V) 
D)  I), II), and III) 
E)  II), III), and V) 
A)  I), III), V) 
B)  II), III) and IV) 
C)  III), IV), and V) 
D)  I), II), and III) 
E)  II), III), and V)

Question 13

Predict the major product for the reaction: 1-butene + HI →

Accepted Answer

A)  CH2ICH2CH2CH3 
B)  CH2ICH=CHCH3 
C)  CH2=CICH2CH3 
D)  CH3CHICH2CH3 
E)  CH3CI2CH2CH3 
A)  CH2ICH2CH2CH3 
B)  CH2ICH=CHCH3 
C)  CH2=CICH2CH3 
D)  CH3CHICH2CH3 
E)  CH3CI2CH2CH3

Question 14

In a substitution reaction an atom, an ion or a group in one molecule is replaced by another atom, ion or group

Accepted Answer

A) True 
 B)False

Exam 27: Reactions of Organic Compounds

Molecules add across multiple bonds in another molecule in addition reactions

Predict the major product for the reaction: 2-methyl-2-pentene + HCl →

Synthesis of alkanes from alkyl halides is a typical example of E2 reaction.

What is the difference between atactic polymer and isotactic polymer?

Identify substituents that are meta directors in electrophilic aromatic substitution. I. -OR II. -NO2 III. -OCOCH3 IV. -CHO V. -COOH

We can promote SN2 over SN1 reactions if we: I. use a substrate that gives a primary carbocation and not tertiary carbocation II. use a sterically hindered substrate III. use a polar protic solvent

Which reagents would you use for the following transformations?

Find a group that is a ortho,para director in electrophilic aromatic substitution.

Predict major products for chlorination of the following three aromatic compounds:

Give the product(s) of the reaction (in H2SO4) : CH2=CHCH3 + H2O → product(s)

Which of the following steps can be found in any of the polymerization mechanisms you learned? I. initiation II. condensation III. propagation IV. dehydrohalogenation V. rearrangement

Predict the major product for the reaction: 1-butene + HI →

In a substitution reaction an atom, an ion or a group in one molecule is replaced by another atom, ion or group

Matter - Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Additional Aspects

Intermolecular Forces: Liquids and Solids

Solutions and Their Physical Properties

Chemical Kinetics

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Spontaneous Change: Entropy and Free Energy

Electrochemistry

Main Group Elements I: Groups 1, 2, 13, and 14

Main Group Elements II: Groups 18, 17, 16, 15, and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry 1-41

Structures of Organic Compounds

Chemistry of the Living State

Filters

Identify substituents that are meta directors in electrophilic aromatic substitution. I. -OR II. -NO₂ III. -OCOCH₃ IV. -CHO V. -COOH

We can promote SN₂ over SN₁reactions if we: I. use a substrate that gives a primary carbocation and not tertiary carbocation II. use a sterically hindered substrate III. use a polar protic solvent

Give the product(s) of the reaction (in H₂SO₄) : CH₂=CHCH₃ + H₂O → product(s)