Question 1

Identify the true statements in the mechanism in the addition of water to an alkene.

Accepted Answer

A) The addition of the electrophile is a slow step. 
B) The addition of the nucleophile is a fast step. 
C) A carbocation is formed as an intermediate. 
D) Water abstracts the extra proton from the protonated alcohol. 
E) All of the above 
A) The addition of the electrophile is a slow step. 
B) The addition of the nucleophile is a fast step. 
C) A carbocation is formed as an intermediate. 
D) Water abstracts the extra proton from the protonated alcohol. 
E) All of the above E

Question 2

Which of the following is the best reaction sequence to use if one wants to accomplish a Markovnikov addition of water to an alkene with minimal skeletal rearrangement?

Accepted Answer

A) water + dilute acid 
B) water + concentrated acid 
C) oxymercuration-demercuration 
D) hydroboration-oxidation 
E) none of the above 
A) water + dilute acid 
B) water + concentrated acid 
C) oxymercuration-demercuration 
D) hydroboration-oxidation 
E) none of the above C

Question 3

Provide the structure of the major organic product in the reaction below.

Accepted Answer

The answer of Provide the structure of the major organic...

Question 4

Which of the following alkenes reacts with HCl at the slowest rate?

Accepted Answer

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

Question 5

Provide the structure of the major organic product in the reaction below.

Accepted Answer

The answer of Provide the structure of the major organic...

Question 6

Draw the major organic product generated in the reaction below.

Accepted Answer

The answer of Draw the major organic product generated in...

Question 7

Draw the product.

Accepted Answer

The answer of Draw the product.  ...

Question 8

Complete the following reaction and provide a detailed, step-by-step mechanism for the process.

Accepted Answer

@#IMG-DLM&_TB1830_00

Question 9

Provide the major organic product(s)in the reaction below.

Accepted Answer

The answer of Provide the major organic product(s)in the reaction...

Question 10

Which of the following carbocations is likely to rearrange?

Accepted Answer

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

Question 11

Which of the following alkenes yield(s)3-bromo-3-methylpentane as the major product upon addition of HBr?

Accepted Answer

A) I and II only 
B) III only 
C) I, II, nad III only 
D) all of them 
E) none of them 
A) I and II only 
B) III only 
C) I, II, nad III only 
D) all of them 
E) none of them

Question 12

Give the product for the reaction that occurs when 1-pentene is treated with Cl2.

Accepted Answer

A) 1-chloropentane 
B) 2-chloropentane 
C) 1,1-dichloropentane 
D) 2,2-dichloropentane 
E) 1,2-dichloropentane 
A) 1-chloropentane 
B) 2-chloropentane 
C) 1,1-dichloropentane 
D) 2,2-dichloropentane 
E) 1,2-dichloropentane

Question 13

Draw the product.

Accepted Answer

The answer of Draw the product.  ...

Question 14

For an endergonic reaction step, the Hammond postulate allows one to say that ________.

Accepted Answer

A) the transition state of the step resembles the reactants of the step 
B) the transition state of the step resembles the products of the step 
C) the step is rate-determining since it has the smallest Ea 
D) the reaction containing this step is overall first order 
E) the transition state is precisely symmetric with bond-breaking and bond-forming occurring to the same extent 
A) the transition state of the step resembles the reactants of the step 
B) the transition state of the step resembles the products of the step 
C) the step is rate-determining since it has the smallest Ea 
D) the reaction containing this step is overall first order 
E) the transition state is precisely symmetric with bond-breaking and bond-forming occurring to the same extent

Question 15

Upon hydrogenation, which of the following alkenes releases the least heat per mole?

Accepted Answer

A) 3,4-dimethyl-1-hexene 
B) (Z)-3,4-dimethyl-2-hexene 
C) (
E) -3,4-dimethyl-2-hexene 
D) (Z)-3,4-dimethyl-3-hexene 
E) (
E) -3,4-dimethyl-3-hexene 
A) 3,4-dimethyl-1-hexene 
B) (Z)-3,4-dimethyl-2-hexene 
C) (
E) -3,4-dimethyl-2-hexene 
D) (Z)-3,4-dimethyl-3-hexene 
E) (
E) -3,4-dimethyl-3-hexene

Question 16

Which of the following is the most stable carbocation?

Accepted Answer

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

Question 17

Which alkene reacts the fastest with HBr?

Accepted Answer

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

Question 18

Provide the structure of the major organic product in the reaction below.

Accepted Answer

The answer of Provide the structure of the major organic...

Question 19

What is the major product of 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 20

Which of the following is the most stable alkene?

Accepted Answer

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

Exam 6: Reactions of Alkenes

Identify the true statements in the mechanism in the addition of water to an alkene.

Which of the following is the best reaction sequence to use if one wants to accomplish a Markovnikov addition of water to an alkene with minimal skeletal rearrangement?

Provide the structure of the major organic product in the reaction below.

Which of the following alkenes reacts with HCl at the slowest rate?

Provide the structure of the major organic product in the reaction below.

Draw the major organic product generated in the reaction below.

Draw the product.

Complete the following reaction and provide a detailed, step-by-step mechanism for the process.

Provide the major organic product(s)in the reaction below.

Which of the following carbocations is likely to rearrange?

Which of the following alkenes yield(s)3-bromo-3-methylpentane as the major product upon addition of HBr?

Give the product for the reaction that occurs when 1-pentene is treated with Cl2.

Draw the product.

For an endergonic reaction step, the Hammond postulate allows one to say that ________.

Upon hydrogenation, which of the following alkenes releases the least heat per mole?

Which of the following is the most stable carbocation?

Which alkene reacts the fastest with HBr?

Provide the structure of the major organic product in the reaction below.

What is the major product of the following reaction?

Which of the following is the most stable alkene?

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds

Isomers: the Arrangement of Atoms in Space

Alkenes Thermodynamics and Kinetics

Reactions of Alkynes Introduction to Multistep Synthesis

Electron Delocalization, Resonance, and Aromaticity More About Molecular Orbital Theory

Substitution Reactions of Alkyl Halides

Elimination Reactions of Alkyl Halides Competition Between Substitution and Elimination

Reactions of Alcohols, Ethers, Epoxides, and Sulfur-Containing Compounds

Organometallic Compounds

Reactions of Alkanes, 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 Alpha Carbon of Carbonyl Compounds

Reactions of Benzene and Substituted Benzenes

More About Amines Heterocylic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Catalysis

The Organic Mechanisms of the Coenzymes

The Chemistry of Metabolism

Nucleosides, Nucleotides, and Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters

Give the product for the reaction that occurs when 1-pentene is treated with Cl₂.