Question 1

Which of the following alcohols can eliminate water to produce alkene?
I.phenol
II.HOC(CH3)3
III.HOCH(CH3)2

Accepted Answer

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

Question 2

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  E

Question 3

The step reaction polymerizations are fast polymerization reactions.

Accepted Answer

A) True 
 B)False  False

Question 4

Reactions between alkanes and HX compounds are typical examples of addition reactions.

Accepted Answer

A) True 
 B)False

Question 5

A hydrocarbon has a molecular weight 56 g/mol and contains 85.7% carbon.It easily adds one mol of HBr to produce a chiral alkyl bromide.Which of the following structures could be the hydrocarbon?

Accepted Answer

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

Question 6

You need to substitute one hydrogen with bromine on an aromatic ring.What reagents do you use?

Accepted Answer

A) HBr and FeBr3 as catalyst 
B) Br2 and heat 
C) Br2 and FeBr3 as catalyst 
D) a mixture of HBr and conc.H2SO4 
E) Br2 and radiation (hυ) 
A) HBr and FeBr3 as catalyst 
B) Br2 and heat 
C) Br2 and FeBr3 as catalyst 
D) a mixture of HBr and conc.H2SO4 
E) Br2 and radiation (hυ)

Question 7

What alkene(s)would be produced in the following reaction?

Accepted Answer

A) 3-methyl-2-pentene 
B) 2-methyl-2-butene 
C) 3-methylbutene 
D) pentene and 1-methylpentene 
E) 2-methyl-2-butene and 3-methylbutene 
A) 3-methyl-2-pentene 
B) 2-methyl-2-butene 
C) 3-methylbutene 
D) pentene and 1-methylpentene 
E) 2-methyl-2-butene and 3-methylbutene

Question 8

Suggest reagents for the synthesis of meta-chloronitrobenzene from nitrobenzene.

Accepted Answer

A) Cl2 and AlCl3 
B) HCl and AlCl3 
C) Cl2 and H2SO4 
D) HCl and HNO3 
E) Cl2 and FeBr3 
A) Cl2 and AlCl3 
B) HCl and AlCl3 
C) Cl2 and H2SO4 
D) HCl and HNO3 
E) Cl2 and FeBr3

Question 9

Which of the following statements correctly describe SN2 and SN1 reactions?
I.SN2 reactions proceed with retention of configuration.
II.SN1 reactions prefer polar protic solvents.
III.SN1 reactions can produce racemic products.
IV.SN2 reactions are promoted in the presence of a substrate that produces a very stable carbocation.
V.SN1 reactions have a unimolecular rate-determining step.

Accepted Answer

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

Question 10

Classify the following polymers as atactic,isotactic or syndiotactic:

Accepted Answer

A) Polymer A is isotactic,polymer B is atactic and polymer C is syndiotactic. 
B) Polymer A is atactic,polymer B is isotactic and polymer C is syndiotactic. 
C) Polymers A and B are isotactic and polymer C is syndiotactic. 
D) Polymer A is isotactic and polymers B and C is syndiotactic. 
E) Polymer A is syndiotactic,polymer B is isotactic and polymer C is atactic. 
A) Polymer A is isotactic,polymer B is atactic and polymer C is syndiotactic. 
B) Polymer A is atactic,polymer B is isotactic and polymer C is syndiotactic. 
C) Polymers A and B are isotactic and polymer C is syndiotactic. 
D) Polymer A is isotactic and polymers B and C is syndiotactic. 
E) Polymer A is syndiotactic,polymer B is isotactic and polymer C is atactic.

Question 11

Markovnikof's rule predicts that when HBr is added to an unsymmetrical alkene or alkyne,the H atom will add to which carbon atom?

Accepted Answer

A) the carbon with the fewest attached hydrogens 
B) the carbon with the Br 
C) the carbon with the most attached hydrogens 
D) the carbon next to the double or triple bond 
E) HBr does not react with unsymmetrical alkenes or alkynes 
A) the carbon with the fewest attached hydrogens 
B) the carbon with the Br 
C) the carbon with the most attached hydrogens 
D) the carbon next to the double or triple bond 
E) HBr does not react with unsymmetrical alkenes or alkynes

Question 12

Which of the following compounds could be used as catalysts in halogenation of benzene?
I.AlCl3
II.NaCl
III.FeBr3
IV.MgCl2
V.PbCl2

Accepted Answer

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

Question 13

Which of the following is an unsymmetrical reagent?

Accepted Answer

A) Cl2  
B) H2O 
C) H2O and HCl 
D) HCl 
E) I2  
A) Cl2  
B) H2O 
C) H2O and HCl 
D) HCl 
E) I2

Question 14

Suggest possible compounds for A,B and C in the following scheme:

Accepted Answer

A) A is Cl2,B is AlCl3 and C is meta chloronitrobenzene 
B) A is Cl2,B is FeCl3 and C is ortho chloronitrobenzene 
C) A is Cl2,B is FeBr3 and C is meta chloronitrobenzene 
D) A is HCl,B is AlCl3 and C is para chloronitrobenzene 
E) A is Cl2,B is AlBr3 and C is meta chloronitrobenzene 
A) A is Cl2,B is AlCl3 and C is meta chloronitrobenzene 
B) A is Cl2,B is FeCl3 and C is ortho chloronitrobenzene 
C) A is Cl2,B is FeBr3 and C is meta chloronitrobenzene 
D) A is HCl,B is AlCl3 and C is para chloronitrobenzene 
E) A is Cl2,B is AlBr3 and C is meta chloronitrobenzene

Question 15

What is the major product in the reaction between 2-bromo-3-methylbutane and KOtBu in ethanol?

Accepted Answer

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

Question 16

What is the major product in the following transformation?

Accepted Answer

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

Question 17

Molecules add across multiple bonds in another molecule in addition reactions.

Accepted Answer

A) True 
 B)False

Question 18

Lindlar's catalyst is used when ________.

Accepted Answer

A) we want to reduce alkynes to alkanes 
B) we want to speed up HX addition reactions 
C) we have to promote elimination reactions over substitution reactions 
D) we need to activate Pd hydrogenation catalyst 
E) we want to reduce alkynes to Z alkenes 
A) we want to reduce alkynes to alkanes 
B) we want to speed up HX addition reactions 
C) we have to promote elimination reactions over substitution reactions 
D) we need to activate Pd hydrogenation catalyst 
E) we want to reduce alkynes to Z alkenes

Question 19

Which of the following steps are a part of chain reaction during alkane substitution?
I.propagation
II.initiation
III.competition
IV.dehalogenation
V.termination

Accepted Answer

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

Question 20

For which type of reaction is the following an example?

Accepted Answer

A) substitution 
B) elimination 
C) polymerization 
D) rearrangement 
E) addition 
A) substitution 
B) elimination 
C) polymerization 
D) rearrangement 
E) addition

Exam 27: Reactions of Organic Compounds

Which of the following alcohols can eliminate water to produce alkene? I.phenol II.HOC(CH3)3 III.HOCH(CH3)2

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

The step reaction polymerizations are fast polymerization reactions.

Reactions between alkanes and HX compounds are typical examples of addition reactions.

A hydrocarbon has a molecular weight 56 g/mol and contains 85.7% carbon.It easily adds one mol of HBr to produce a chiral alkyl bromide.Which of the following structures could be the hydrocarbon?

You need to substitute one hydrogen with bromine on an aromatic ring.What reagents do you use?

What alkene(s)would be produced in the following reaction?

Suggest reagents for the synthesis of meta-chloronitrobenzene from nitrobenzene.

Classify the following polymers as atactic,isotactic or syndiotactic:

Markovnikof's rule predicts that when HBr is added to an unsymmetrical alkene or alkyne,the H atom will add to which carbon atom?

Which of the following compounds could be used as catalysts in halogenation of benzene? I.AlCl3 II.NaCl III.FeBr3 IV.MgCl2 V.PbCl2

Which of the following is an unsymmetrical reagent?

Suggest possible compounds for A,B and C in the following scheme:

What is the major product in the reaction between 2-bromo-3-methylbutane and KOtBu in ethanol?

What is the major product in the following transformation?

Molecules add across multiple bonds in another molecule in addition reactions.

Lindlar's catalyst is used when ________.

Which of the following steps are a part of chain reaction during alkane substitution? I.propagation II.initiation III.competition IV.dehalogenation V.termination

For which type of reaction is the following an example?

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: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Chemistry of the Living State

Filters

Which of the following alcohols can eliminate water to produce alkene? I.phenol II.HOC(CH₃)₃ III.HOCH(CH₃)₂

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

Which of the following compounds could be used as catalysts in halogenation of benzene? I.AlCl₃ II.NaCl III.FeBr₃ IV.MgCl₂ V.PbCl₂

What is the major product in the reaction between 2-bromo-3-methylbutane and KO^tBu in ethanol?