Question 1

Which pair of compounds would react to produce a polymer?

Accepted Answer

A)  an acid and a diol 
B)  a diacid and an alcohol 
C)  a diacid and a diol 
D)  an alcohol and an acid 
E)  a diacid and a diketone 
A)  an acid and a diol 
B)  a diacid and an alcohol 
C)  a diacid and a diol 
D)  an alcohol and an acid 
E)  a diacid and a diketone

Question 2

Match the following.
-strong base

Accepted Answer

A) substitution at saturated carbon atom, mechanism 
B) methoxide 
C) LiAlH4 
D) elimination reaction mechanism 
E) CN-
F)hemiketal
G)H+
H)Jones reagent
I)step-growth 
A) substitution at saturated carbon atom, mechanism 
B) methoxide 
C) LiAlH4 
D) elimination reaction mechanism 
E) CN-
F)hemiketal
G)H+
H)Jones reagent
I)step-growth

Question 3

Determine the product of the following reaction:

Accepted Answer

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

Question 4

Choose the weak base from the compounds below.

Accepted Answer

A)  (CH3)2NH 
B)  CH3CO2H 
C)  CH3COCH3 
D)  CH3CH3 
E)  CH3CH2F 
A)  (CH3)2NH 
B)  CH3CO2H 
C)  CH3COCH3 
D)  CH3CH3 
E)  CH3CH2F

Question 5

Determine the products of the following reaction:

Accepted Answer

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

Question 6

Which of the following statements is TRUE?

Accepted Answer

A)  Alkenes are as unreactive as alkanes. 
B)  Electrophilic addition reactions proceed via either an E1 or E2 mechanism. 
C)  The first step of an H-X electrophilic addition is the formation of a carbanion. 
D)  Carbon-carbon double bonds are electron rich and are nucleophilic. 
E)  During the addition of an H-X molecule, the H atom behaves as a nucleophile while the X atom behaves as an electrophile. 
A)  Alkenes are as unreactive as alkanes. 
B)  Electrophilic addition reactions proceed via either an E1 or E2 mechanism. 
C)  The first step of an H-X electrophilic addition is the formation of a carbanion. 
D)  Carbon-carbon double bonds are electron rich and are nucleophilic. 
E)  During the addition of an H-X molecule, the H atom behaves as a nucleophile while the X atom behaves as an electrophile.

Question 7

Choose the weak acid from the compounds below.

Accepted Answer

A)  CH3CH2NH2 
B)  CH3CH2CO2H 
C)  CH3CH2OCH3 
D)  CH3CH2F 
E)  CH3COOC2H5 
A)  CH3CH2NH2 
B)  CH3CH2CO2H 
C)  CH3CH2OCH3 
D)  CH3CH2F 
E)  CH3COOC2H5

Question 8

Identify the step-growth polymer.

Accepted Answer

A)  nylon 6,6 
B)  polyvinyl chloride 
C)  polyethylene 
D)  polypropylene 
E)  polystyrene 
A)  nylon 6,6 
B)  polyvinyl chloride 
C)  polyethylene 
D)  polypropylene 
E)  polystyrene

Question 9

Which of the following is the balanced chemical equation for the catalytic hydrogenation (addition of H2) to CH3CH=CHCH3?

Accepted Answer

A)  CH3CH=CHCH3 + 2H2 → 2CH3CH3 
B)  CH3CH=CHCH3 + 3H2 → CH3CH3 + 2 CH4 
C)  CH3CH=CHCH3 + 2H2 → CH3CH2CH3 + CH4 
D)  CH3CH=CHCH3 + H2 → CH3CH2CH2CH3 
E)  CH3CH=CHCH3 + 4H2 → 4CH4 
A)  CH3CH=CHCH3 + 2H2 → 2CH3CH3 
B)  CH3CH=CHCH3 + 3H2 → CH3CH3 + 2 CH4 
C)  CH3CH=CHCH3 + 2H2 → CH3CH2CH3 + CH4 
D)  CH3CH=CHCH3 + H2 → CH3CH2CH2CH3 
E)  CH3CH=CHCH3 + 4H2 → 4CH4

Question 10

To prepare nitrobenzene (C6H5NO2) from benzene (C6H6), two strong mineral acids are required. Which ones?

Accepted Answer

A)  HNO3 and H2SO3 
B)  HNO3 and HClO4 
C)  HNO2 and H2SO4 
D)  HNO3 and H2SO4 
E)  HNO3 and H2S2O7 
A)  HNO3 and H2SO3 
B)  HNO3 and HClO4 
C)  HNO2 and H2SO4 
D)  HNO3 and H2SO4 
E)  HNO3 and H2S2O7

Question 11

Find the suitable reagent for the transformation:

Accepted Answer

A)  NaBH4 
B)  LiAlH4 
C)  Pd/H2 
D)  NaH 
E)  Pd/C 
A)  NaBH4 
B)  LiAlH4 
C)  Pd/H2 
D)  NaH 
E)  Pd/C

Question 12

What are polymers?

Accepted Answer

A)  Polymers are long, chain-like molecules composed of small, repeating units called monomers. 
B)  Polymers are long, chain-like molecules composed of small, repeating units called copolymers. 
C)  Polymers are long, chain-like molecules without fixed composition or structure, commonly of low molecular weight. 
D)  Polymers are long, chain-like molecules formed when smaller units, monomers, crystalize together from solution. 
E)  Polymers are long, chain-like molecules composed of small, repeating units called oligomers. 
A)  Polymers are long, chain-like molecules composed of small, repeating units called monomers. 
B)  Polymers are long, chain-like molecules composed of small, repeating units called copolymers. 
C)  Polymers are long, chain-like molecules without fixed composition or structure, commonly of low molecular weight. 
D)  Polymers are long, chain-like molecules formed when smaller units, monomers, crystalize together from solution. 
E)  Polymers are long, chain-like molecules composed of small, repeating units called oligomers.

Question 13

Draw a clear mechanism for E1 elimination reactions. Make sure to indicate each step of the mechanism (if there is more than one) as well as to use arrows to show the electron flow.

Accepted Answer

E1 elimination reactions involve a two-s

Question 14

Write chemical formulas for the missing products in the following reaction.
CH3COOH + (COCl)2 → CH3COCl + HCl + ? + ?

Accepted Answer

Question 15

Identify reagents A and B required for the following transformation of acyl groups: C2H5COOH   C2H5COCl   C2H5CONHCH3 + HCl

Accepted Answer

A)  A = AlCl3; B = H2NCH3 
B)  A = FeCl3; B = HCONHCH3 
C)  A = SOCl2; B = HCONHCH3 
D)  A = FeCl3; B = H2NCH3 
E)  A = SOCl2; B = H2NCH3 
A)  A = AlCl3; B = H2NCH3 
B)  A = FeCl3; B = HCONHCH3 
C)  A = SOCl2; B = HCONHCH3 
D)  A = FeCl3; B = H2NCH3 
E)  A = SOCl2; B = H2NCH3

Question 16

Give the product of the oxidation of the following compound:

Accepted Answer

A)  CH3CH2CHO 
B)  CH3CH2CH2OCH3 
C)  CH3CH2COOH 
D)  CH3CH2COCOCH2CH3 
E)  CH3CH2COCH3 
A)  CH3CH2CHO 
B)  CH3CH2CH2OCH3 
C)  CH3CH2COOH 
D)  CH3CH2COCOCH2CH3 
E)  CH3CH2COCH3

Question 17

Which of the following statements is TRUE?

Accepted Answer

A)  During the electrophilic aromatic substitutions, the resonance stabilized carbocation reacts with a base to give the addition product. 
B)  Aromatic compounds are very reactive because they contain more than one C=C double bond in their structure. 
C)  The rate-determining (slow) step of electrophilic aromatic substitutions is the deprotonation of the carbocation intermediate. 
D)  Unlike alkenes, aromatic compounds almost always prefer electrophilic substitution over electrophilic addition. 
E)  During the electrophilic aromatic substitution a Bronsted or Lewis acid is required to generate the nucleophile from an aromatic substrate. 
A)  During the electrophilic aromatic substitutions, the resonance stabilized carbocation reacts with a base to give the addition product. 
B)  Aromatic compounds are very reactive because they contain more than one C=C double bond in their structure. 
C)  The rate-determining (slow) step of electrophilic aromatic substitutions is the deprotonation of the carbocation intermediate. 
D)  Unlike alkenes, aromatic compounds almost always prefer electrophilic substitution over electrophilic addition. 
E)  During the electrophilic aromatic substitution a Bronsted or Lewis acid is required to generate the nucleophile from an aromatic substrate.

Question 18

Which of the following compounds is a Grignard reagent?

Accepted Answer

A)  (C3H7)2Mg 
B)  LiClC4H9 
C)  CH3CH2MgBr 
D)  CH3Mg(OH) 
E)  CH3CH2MgOCH3 
A)  (C3H7)2Mg 
B)  LiClC4H9 
C)  CH3CH2MgBr 
D)  CH3Mg(OH) 
E)  CH3CH2MgOCH3

Question 19

Which of the following statements is TRUE?

Accepted Answer

A)  H-X molecules add across C=C bonds with retention of absolute configuration. 
B)  The addition of H-X molecules to alkenes and alkynes is a one-step mechanism. 
C)  The rate of H-X addition depends strongly on the nature of the leaving group. 
D)  According to Markovnikov's rule, the hydrogen cation adds to the C=C bond in such a way as to generate the most stable carbocation. 
E)  The hydrogen cation adds to the more substituted carbon atom of the C=C bond, a fact known as the Markovnikov's rule. 
A)  H-X molecules add across C=C bonds with retention of absolute configuration. 
B)  The addition of H-X molecules to alkenes and alkynes is a one-step mechanism. 
C)  The rate of H-X addition depends strongly on the nature of the leaving group. 
D)  According to Markovnikov's rule, the hydrogen cation adds to the C=C bond in such a way as to generate the most stable carbocation. 
E)  The hydrogen cation adds to the more substituted carbon atom of the C=C bond, a fact known as the Markovnikov's rule.

Question 20

Find the suitable reagent for the transformation:

Accepted Answer

A)  NaBH4 
B)  LiAlH4 
C)  Pd/H2 
D)  NaH 
E)  Pd/C 
A)  NaBH4 
B)  LiAlH4 
C)  Pd/H2 
D)  NaH 
E)  Pd/C

Exam 21: Organic Chemistry Ii: Reactions

Which pair of compounds would react to produce a polymer?

Match the following. -strong base

Determine the product of the following reaction:

Choose the weak base from the compounds below.

Determine the products of the following reaction:

Which of the following statements is TRUE?

Choose the weak acid from the compounds below.

Identify the step-growth polymer.

Which of the following is the balanced chemical equation for the catalytic hydrogenation (addition of H2) to CH3CH=CHCH3?

To prepare nitrobenzene (C6H5NO2) from benzene (C6H6), two strong mineral acids are required. Which ones?

Find the suitable reagent for the transformation:

What are polymers?

Draw a clear mechanism for E1 elimination reactions. Make sure to indicate each step of the mechanism (if there is more than one) as well as to use arrows to show the electron flow.

Write chemical formulas for the missing products in the following reaction. CH3COOH + (COCl)2 → CH3COCl + HCl + ? + ?

Identify reagents A and B required for the following transformation of acyl groups: C2H5COOH C2H5COCl C2H5CONHCH3 + HCl

Give the product of the oxidation of the following compound:

Which of the following statements is TRUE?

Which of the following compounds is a Grignard reagent?

Which of the following statements is TRUE?

Find the suitable reagent for the transformation:

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Which of the following is the balanced chemical equation for the catalytic hydrogenation (addition of H₂) to CH₃CH=CHCH₃?

To prepare nitrobenzene (C₆H₅NO₂) from benzene (C₆H₆), two strong mineral acids are required. Which ones?

Write chemical formulas for the missing products in the following reaction. CH₃COOH + (COCl)₂ → CH₃COCl + HCl + ? + ?

Identify reagents A and B required for the following transformation of acyl groups: C₂H₅COOH C₂H₅COCl C2H₅CONHCH₃ + HCl