Question 1

What is the product for the following three-step reaction sequence?

Accepted Answer

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

Question 2

Briefly,but clearly,explain the following observation:
When 2-methylbutane reacts with Cl2/h$\nu$,the monochlorinated products consist of four constitutional isomers in significant yields.However,when the same alkane is allowed to react with Br2/ h$\nu$,there is only one major monobromination product.

Accepted Answer

The final product distribution is a cons

Question 3

What is the major product obtained from the following reaction sequence?

Accepted Answer

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

Question 4

Bond formation is an ______________ process,and therefore $\Delta$ H° is ____________.

Accepted Answer

The answer of Bond formation is an ______________ process,and therefore...

Question 5

What is the product for the following three-step reaction sequence?

Accepted Answer

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

Question 6

Which of the following reactions should have the smallest energy of activation?

Accepted Answer

A)  CH4 + Cl· $\rightarrow$CH3· + HCl 
B)  CH3CH3 + Cl· $\rightarrow$ CH3CH2· + HCl 
C) 
  
D) 
  
E) 
  
A)  CH4 + Cl· $\rightarrow$CH3· + HCl 
B)  CH3CH3 + Cl· $\rightarrow$ CH3CH2· + HCl 
C) 
  
D) 
  
E)

Question 7

What is the product for the following three-step reaction sequence?

Accepted Answer

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

Question 8

In the presence of light,ethane (1 mol)reacts with chlorine (1 mol)to form which product(s)?

Accepted Answer

A)  CH2ClCHCl2 
B)  CH3CHCl2 
C)  CH3CH2Cl 
D)  ClCH2CH2Cl 
E)  All of these 
A)  CH2ClCHCl2 
B)  CH3CHCl2 
C)  CH3CH2Cl 
D)  ClCH2CH2Cl 
E)  All of these

Question 9

Select the structure of the major product formed in the following reaction.

Accepted Answer

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

Question 10

Mono-bromination of the following alkane,   , (using Br2 with light)would be?

Accepted Answer

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

Question 11

Which of the following statements is true when used to compare the reaction of fluorine with 2-methylhexane and the reaction of bromine with 2-methylhexane?

Accepted Answer

A)  Bromine is the less reactive and the less selective,giving 2-bromo-2-methyl hexane as one of several products. 
B)  Fluorine is the less reactive and the more selective,giving 2-fluoro-2-methyl hexane as the major product. 
C)  Fluorine is the more reactive and less selective,giving 2-fluoro-2-methyl hexane as one of several products. 
D)  Bromine is the more reactive and the more selective,giving 2-bromo-2-methyl hexane as the major product. 
E)  More than one of the above statements is true. 
A)  Bromine is the less reactive and the less selective,giving 2-bromo-2-methyl hexane as one of several products. 
B)  Fluorine is the less reactive and the more selective,giving 2-fluoro-2-methyl hexane as the major product. 
C)  Fluorine is the more reactive and less selective,giving 2-fluoro-2-methyl hexane as one of several products. 
D)  Bromine is the more reactive and the more selective,giving 2-bromo-2-methyl hexane as the major product. 
E)  More than one of the above statements is true.

Question 12

Which is true for a chain-terminating step?

Accepted Answer

A)  "A new free radical is formed." 
B)  "The process is endothermic." 
C)  "Eact = 0." 
D)  "$\Delta$H° is positive." 
E)  "A product is formed which is immune to further reaction." 
A)  "A new free radical is formed." 
B)  "The process is endothermic." 
C)  "Eact = 0." 
D)  "$\Delta$H° is positive." 
E)  "A product is formed which is immune to further reaction."

Question 13

Carbocations are NOT intermediates in which one of the following reactions?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E)  More than one of the above 
A) 
  
B) 
  
C) 
  
D) 
  
E)  More than one of the above

Question 14

Suggest a reasonable strategy for the synthesis of 1-bromo-2-methylcyclohexane from methylcyclohexane

Accepted Answer

The answer of Suggest a reasonable strategy for the synthesis...

Question 15

Although alkyl radicals are uncharged,the carbon bearing the odd electron is electron ___________,and alkyl groups provide a __________________ effect.

Accepted Answer

deficient;

Question 16

Unsymmetrical alkenes give Markovnikov products through the most stable_______________ intermediates and anti-Markovnikov products through the most stable _______________ intermediates.

Accepted Answer

carbocatio

Question 17

In a chain-propagating step,one radical _______________.

Accepted Answer

The answer of In a chain-propagating step,one radical _______________....

Question 18

Which of the reactions listed below would be exothermic?

Accepted Answer

A)  H-H $\rightarrow$ 2H· 
B)  H· + CH3-H $\rightarrow$CH3-H + H· 
C)  CH3· + CH3· $\rightarrow$ CH3-CH3 
D)  CH3· + CH3-H $\rightarrow$ CH3-H + CH3· 
E)  All of the above 
A)  H-H $\rightarrow$ 2H· 
B)  H· + CH3-H $\rightarrow$CH3-H + H· 
C)  CH3· + CH3· $\rightarrow$ CH3-CH3 
D)  CH3· + CH3-H $\rightarrow$ CH3-H + CH3· 
E)  All of the above

Question 19

Mono-bromination of the following alkane,   , (using Br2 with light)would be?

Accepted Answer

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

Question 20

Mono-bromination of the following alkane,   , (using Br2 with light)would be?

Accepted Answer

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

Exam 10: Radical Reactions

What is the product for the following three-step reaction sequence?

What is the major product obtained from the following reaction sequence?

Bond formation is an ______________ process,and therefore Δ\DeltaΔ H° is ____________.

What is the product for the following three-step reaction sequence?

Which of the following reactions should have the smallest energy of activation?

What is the product for the following three-step reaction sequence?

In the presence of light,ethane (1 mol)reacts with chlorine (1 mol)to form which product(s)?

Select the structure of the major product formed in the following reaction.

Mono-bromination of the following alkane, , (using Br2 with light)would be?

Which of the following statements is true when used to compare the reaction of fluorine with 2-methylhexane and the reaction of bromine with 2-methylhexane?

Which is true for a chain-terminating step?

Carbocations are NOT intermediates in which one of the following reactions?

Suggest a reasonable strategy for the synthesis of 1-bromo-2-methylcyclohexane from methylcyclohexane

Although alkyl radicals are uncharged,the carbon bearing the odd electron is electron ___________,and alkyl groups provide a __________________ effect.

Unsymmetrical alkenes give Markovnikov products through the most stable_______________ intermediates and anti-Markovnikov products through the most stable _______________ intermediates.

In a chain-propagating step,one radical _______________.

Which of the reactions listed below would be exothermic?

Mono-bromination of the following alkane, , (using Br2 with light)would be?

Mono-bromination of the following alkane, , (using Br2 with light)would be?

Carbon Compounds and Chemical Bonds

Representative Carbon Compounds: Functional Groups, Intermolecular Forces, and Infrared Ir Spectroscopy

An Introduction to Organic Reactions: Acids and Bases

Alkanes: Nomenclature, Conformational Analysis, and an Introduction to Synthesis

Stereochemistry: Chiral Molecules

Ionic Reactions - Nucleophilic Substitution and Elimination Reactions of Alkyl Halides

Alkenes and Alkynes I: Properties and Synthesis, Elimination Reactions of Alkyl Halides

Alkenes and Alkynes Ii: Addition Reactions

Nuclear Magnetic Resonance and Mass Spectrometry: Tools for Structure Determination

Alcohols and Ethers

Alcohols From Carbonyl Compounds Oxidation-Reduction and Organometallic Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones I Nucleophilic Addition to the Carbonyl Group

Aldehydes and Ketones Ii Aldol Reactions

Carboxylic Acids and Their Derivatives Nucleophilic Addition - Elimination at the Acyl Carbon

Synthesis and Reactions of Beta-Dicarbonyl Compounds: More Chemistry of Enolate Ions

Amines

Phenols and Aryl Halides: Nucleophilic Aromatic Substitution

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Bond formation is an __ process,and therefore $\Delta$ H° is .

Mono-bromination of the following alkane, , (using Br₂ with light)would be?

Although alkyl radicals are uncharged,the carbon bearing the odd electron is electron _,and alkyl groups provide a ________ effect.

Unsymmetrical alkenes give Markovnikov products through the most stable_ intermediates and anti-Markovnikov products through the most stable _ intermediates.

Mono-bromination of the following alkane, , (using Br₂ with light)would be?

Mono-bromination of the following alkane, , (using Br₂ with light)would be?