Question 1

What is the major product for the following reaction?

Accepted Answer

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

Question 2

Which alkene would liberate the most heat per mole when subjected to catalytic hydrogenation?

Accepted Answer

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

Question 3

Syn hydrogenation of an alkyne will produce a _________ alkene.

Accepted Answer

Cis / Z

Question 4

What is the major product for the following reaction?

Accepted Answer

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

Question 5

Which reaction conditions would not yield 2-butyne from 1-propyne?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E)  More than one of these 
A) 
  
B) 
  
C) 
  
D) 
  
E)  More than one of these

Question 6

When an elimination reaction gives the less substituted alkene as the major product,we say that the elimination follows ________________'s rule.

Accepted Answer

The answer of When an elimination reaction gives the less...

Question 7

What is the major product of the reaction,

Accepted Answer

A)  (CH3)2C=C(CH3)2 
B)  (CH3)3C-CH=CH2 
C)  (CH3)2C=CHCH3 
D)  (CH3)2C=CHCH2CH3 
E)  None of these 
A)  (CH3)2C=C(CH3)2 
B)  (CH3)3C-CH=CH2 
C)  (CH3)2C=CHCH3 
D)  (CH3)2C=CHCH2CH3 
E)  None of these

Question 8

Which compound listed below would you expect to be the major product when 2-bromo-2-methylbutane is refluxed with KOH/ethanol?

Accepted Answer

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

Question 9

What is the major product for the following reaction sequence?

Accepted Answer

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

Question 10

Zaitsev's rule states that:

Accepted Answer

A)  In electrophilic addition of an unsymmetrical reagent to an unsymmetrical alkene,the more positive portion of the reagent will become attached to the carbon of the double bond bearing the greater number of hydrogen atoms. 
B)  An equatorial substituent in cyclohexane results in a more stable conformation than if that substituent were axial. 
C)  E2 reactions occur only if the $\beta$-hydrogen and leaving group can assume an anti-periplanar arrangement. 
D)  When a reaction forms an alkene,and several possibilities exist,the more (or most)stable isomer is the one which predominates. 
E)  The order of reactivity of alcohols in dehydration reactions is 3º > 2º > 1º. 
A)  In electrophilic addition of an unsymmetrical reagent to an unsymmetrical alkene,the more positive portion of the reagent will become attached to the carbon of the double bond bearing the greater number of hydrogen atoms. 
B)  An equatorial substituent in cyclohexane results in a more stable conformation than if that substituent were axial. 
C)  E2 reactions occur only if the $\beta$-hydrogen and leaving group can assume an anti-periplanar arrangement. 
D)  When a reaction forms an alkene,and several possibilities exist,the more (or most)stable isomer is the one which predominates. 
E)  The order of reactivity of alcohols in dehydration reactions is 3º > 2º > 1º.

Question 11

Which would be the major product of the following reaction sequence?

Accepted Answer

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

Question 12

A compound X with the formula C7H10 undergoes catalytic hydrogenation to produce a compound Y with the formula C7H14.What could be true of X?

Accepted Answer

A)  X might have one triple bond and one ring. 
B)  X might have two double bonds and one ring. 
C)  X might have one double bond and two rings. 
D)  X might have one double bond and one triple bond. 
E)  More than one of the above 
A)  X might have one triple bond and one ring. 
B)  X might have two double bonds and one ring. 
C)  X might have one double bond and two rings. 
D)  X might have one double bond and one triple bond. 
E)  More than one of the above

Question 13

What is the major product for the following reaction?

Accepted Answer

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

Question 14

How will you prepare trans-2-heptene from 2-heptyne?

Accepted Answer

Dissolving metal red

Question 15

Which molecule would have the lowest heat of hydrogenation?

Accepted Answer

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

Question 16

Heats of hydrogenation data would be useful in comparing the relative stabilities of which of the following substances?

Accepted Answer

A)  I,II,III 
B)  III,IV 
C)  I,II,V 
D)  Heats of hydrogenation data would not be a useful way to compare relative stabilities of any of the substances. 
E)  All of the above substances could effectively be compared using heats of hydrogenation data. 
A)  I,II,III 
B)  III,IV 
C)  I,II,V 
D)  Heats of hydrogenation data would not be a useful way to compare relative stabilities of any of the substances. 
E)  All of the above substances could effectively be compared using heats of hydrogenation data.

Question 17

Which would be 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 18

Which one of the following alcohols would dehydrate most rapidly when treated with sulfuric acid?

Accepted Answer

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

Question 19

Which reaction would not be a method for preparing 5-methyl-1-hexyne?

Accepted Answer

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

Question 20

Which reaction would yield 2-butyne?

Accepted Answer

A)  CH3C$ \equiv$C: - Na +  + CH3Br $\rightarrow$ 
B)  CH3CH2Br + HC$ \equiv$C: - Na + $\rightarrow$ 
C)  CH3: - Na +  + HC$ \equiv$CCH3 $\rightarrow$ 
D)  More than one of these 
E)  None of these 
A)  CH3C$ \equiv$C: - Na +  + CH3Br $\rightarrow$ 
B)  CH3CH2Br + HC$ \equiv$C: - Na + $\rightarrow$ 
C)  CH3: - Na +  + HC$ \equiv$CCH3 $\rightarrow$ 
D)  More than one of these 
E)  None of these

Exam 7: Alkenes and Alkynes I: Properties and Synthesis, Elimination Reactions of Alkyl Halides

What is the major product for the following reaction?

Which alkene would liberate the most heat per mole when subjected to catalytic hydrogenation?

Syn hydrogenation of an alkyne will produce a _________ alkene.

What is the major product for the following reaction?

Which reaction conditions would not yield 2-butyne from 1-propyne?

When an elimination reaction gives the less substituted alkene as the major product,we say that the elimination follows ________________'s rule.

What is the major product of the reaction,

Which compound listed below would you expect to be the major product when 2-bromo-2-methylbutane is refluxed with KOH/ethanol?

What is the major product for the following reaction sequence?

Zaitsev's rule states that:

Which would be the major product of the following reaction sequence?

A compound X with the formula C7H10 undergoes catalytic hydrogenation to produce a compound Y with the formula C7H14.What could be true of X?

What is the major product for the following reaction?

How will you prepare trans-2-heptene from 2-heptyne?

Which molecule would have the lowest heat of hydrogenation?

Heats of hydrogenation data would be useful in comparing the relative stabilities of which of the following substances?

Which would be the major product of the following reaction?

Which one of the following alcohols would dehydrate most rapidly when treated with sulfuric acid?

Which reaction would not be a method for preparing 5-methyl-1-hexyne?

Which reaction would yield 2-butyne?

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 Ii: Addition Reactions

Nuclear Magnetic Resonance and Mass Spectrometry: Tools for Structure Determination

Radical Reactions

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

A compound X with the formula C₇H₁₀ undergoes catalytic hydrogenation to produce a compound Y with the formula C₇H_14.What could be true of X?