Question 1

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 2

What are primary alcohols oxidized to?

Accepted Answer

A) secondary alcohols 
B) ethers 
C) esters 
D) aldehydes 
E) ketones 
A) secondary alcohols 
B) ethers 
C) esters 
D) aldehydes 
E) ketones

Question 3

Which combination of reagents would you use to brominate an aromatic compound?

Accepted Answer

A) Br2 and FeCl3 
B) HBr and H2SO4 
C) Br2 and FeBr3 
D) HBrO and FeBr3 
E) HBr and HNO3 
A) Br2 and FeCl3 
B) HBr and H2SO4 
C) Br2 and FeBr3 
D) HBrO and FeBr3 
E) HBr and HNO3

Question 4

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 5

Determine the product(s)of the following reaction:

Accepted Answer

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

Question 6

Determine the products of the following reaction:

Accepted Answer

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

Question 7

Which of the following statements is TRUE?

Accepted Answer

A) Addition is the predominant reaction observed in acyl compounds. 
B) Acyl chlorides are the least reactive of all acyl compounds, while amides are the most. 
C) Fischer esterification is the reaction between carboxylic acids with alcohols to produce esters. 
D) Fischer esterification is catalyzed by a strong base. 
E) Transesterification is a reaction in which an ester group is transferred from one organic group to another. 
A) Addition is the predominant reaction observed in acyl compounds. 
B) Acyl chlorides are the least reactive of all acyl compounds, while amides are the most. 
C) Fischer esterification is the reaction between carboxylic acids with alcohols to produce esters. 
D) Fischer esterification is catalyzed by a strong base. 
E) Transesterification is a reaction in which an ester group is transferred from one organic group to another.

Question 8

In which of the following families would the strongest organic acids be found?

Accepted Answer

A) ethers 
B) alcohols 
C) amines 
D) esters 
E) alkanes 
A) ethers 
B) alcohols 
C) amines 
D) esters 
E) alkanes

Question 9

Complete and balance the following complete hydrogenation reaction: CH3CH2C   CCH3 + 2H2 → ?

Accepted Answer

A) CH3CH2C   CCH3 + 3H2 → CH3CH2CH3 + CH3CH3 
B) CH3CH2C   CCH3 + 2H2 → CH3CH2CH2CH2CH3 
C) CH3CH2C   CCH3 + 6H2 → 5CH4 
D) 2CH3CH2C   CCH3 + 2H2 → CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3 
E) CH3CH2C   CCH3 + 2H2 → CH3CH2CH2  
  CH2CH3 
A) CH3CH2C   CCH3 + 3H2 → CH3CH2CH3 + CH3CH3 
B) CH3CH2C   CCH3 + 2H2 → CH3CH2CH2CH2CH3 
C) CH3CH2C   CCH3 + 6H2 → 5CH4 
D) 2CH3CH2C   CCH3 + 2H2 → CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3 
E) CH3CH2C   CCH3 + 2H2 → CH3CH2CH2  
  CH2CH3

Question 10

Predict the correct mechanism and product for the following reaction:

Accepted Answer

A) SN1 mechanism, the product is   
B) SN2 mechanism, the product is   
C) SN2 mechanism, the product is   
D) SN1 mechanism, the product is   
E) E1 mechanism, the product is   
A) SN1 mechanism, the product is   
B) SN2 mechanism, the product is   
C) SN2 mechanism, the product is   
D) SN1 mechanism, the product is   
E) E1 mechanism, the product is

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

Which of the following is the balanced chemical equation for the addition of HBr to CH2=CHCH2CH3?

Accepted Answer

A) CH2=CHCH2CH3 + HBr → CH2BrCH2CH2CH3 
B) CH2=CHCH2CH3 + 2HBr → 2CH2BrCH3 
C) CH2=CHCH2CH3 + 2HBr → CH3Br + CH2BrCH2CH3 
D) CH2=CHCH2CH3 + 4HBr → 4CH3Br 
E) CH2=CHCH2CH3 + HBr → CH3CHBrCH2CH3 
A) CH2=CHCH2CH3 + HBr → CH2BrCH2CH2CH3 
B) CH2=CHCH2CH3 + 2HBr → 2CH2BrCH3 
C) CH2=CHCH2CH3 + 2HBr → CH3Br + CH2BrCH2CH3 
D) CH2=CHCH2CH3 + 4HBr → 4CH3Br 
E) CH2=CHCH2CH3 + HBr → CH3CHBrCH2CH3

Question 13

Which is the strongest organic acid?

Accepted Answer

A) F3CCOOH 
B) F2HCCOOH 
C) H3COOH 
D) ClH2CCOOH 
E) FH2CCOOH 
A) F3CCOOH 
B) F2HCCOOH 
C) H3COOH 
D) ClH2CCOOH 
E) FH2CCOOH

Question 14

Find the suitable base for the following reaction: CH3C(=O)CH3 + :B → CH3C(=O)CH2:- + H:B+
The pKa for CH3C(=O)CH3 (acetone)is 20. The formula for the base is followed by the pKa of its conjugate acid.

Accepted Answer

A) H2O, pKa = 15.74 
B) NH3, pKa = 9.25 
C) CH3CH2O-, pKa = 16 
D) C6H5O-, pKa = 9.88 
E) NH2-, pKa = 38 
A) H2O, pKa = 15.74 
B) NH3, pKa = 9.25 
C) CH3CH2O-, pKa = 16 
D) C6H5O-, pKa = 9.88 
E) NH2-, pKa = 38

Question 15

Which of the following statements is TRUE?

Accepted Answer

A) Elimination reactions proceed via either an E1 mechanism, which is a one-step mechanism, or an E2 mechanism, which is a two-step mechanism. 
B) The E1 mechanism is somewhat similar to the SN1 mechanism: they both start with a dissociation step in which a carbocation is formed. 
C) Primary alcohols and alkylhalides are very likely to react via an E1 mechanism because they produce stable carbocations. 
D) The strength of base used in elimination reactions is not important for the E2 mechanism because the base contributes only to the second step of the E2 mechanism. 
E) E2 elimination reactions can occur at primary carbon centres but not at secondary and tertiary carbon atoms. 
A) Elimination reactions proceed via either an E1 mechanism, which is a one-step mechanism, or an E2 mechanism, which is a two-step mechanism. 
B) The E1 mechanism is somewhat similar to the SN1 mechanism: they both start with a dissociation step in which a carbocation is formed. 
C) Primary alcohols and alkylhalides are very likely to react via an E1 mechanism because they produce stable carbocations. 
D) The strength of base used in elimination reactions is not important for the E2 mechanism because the base contributes only to the second step of the E2 mechanism. 
E) E2 elimination reactions can occur at primary carbon centres but not at secondary and tertiary carbon atoms.

Question 16

What is the correct order of increasing reactivity among acyl groups?

Accepted Answer

A) acyl chloride < acid anhydride < carboxylic acid < amide 
B) acyl chloride < carboxylic acid < acid anhydride < amide 
C) acyl chloride < amide < carboxylic acid < acid anhydride 
D) amide < carboxylic acid < acid anhydride < acyl chloride 
E) amide < acyl chloride < acid anhydride < carboxylic acid 
A) acyl chloride < acid anhydride < carboxylic acid < amide 
B) acyl chloride < carboxylic acid < acid anhydride < amide 
C) acyl chloride < amide < carboxylic acid < acid anhydride 
D) amide < carboxylic acid < acid anhydride < acyl chloride 
E) amide < acyl chloride < acid anhydride < carboxylic acid

Question 17

What are the correct products of the following reaction performed in the presence of an acid? C3H7COOH + C2H5OH →

Accepted Answer

A) C3H7COOC2H5 + H2O 
B) C3H7COC2H5 + H2O + 1/2O2 
C) C3H7C(OH)OC2H5 + H3O+ 
D) C3H7OH + HOOCC2H5 + H3O+ 
E) C3H7C(=O)-O-O-C2H5 + H2O 
A) C3H7COOC2H5 + H2O 
B) C3H7COC2H5 + H2O + 1/2O2 
C) C3H7C(OH)OC2H5 + H3O+ 
D) C3H7OH + HOOCC2H5 + H3O+ 
E) C3H7C(=O)-O-O-C2H5 + H2O

Question 18

Find the suitable base for the following reaction: C6H5OH + :B → C6H5O:- + H:B+
The pKa for C6H5OH (phenol)is 9.88. The formula for the base is followed by the pKa of its conjugate acid.

Accepted Answer

A) CN-, pKa = 9.31 
B) CF3COO-, pKa = 0.23 
C) CH3C(=O)CH3, pKa = -7.2 
D) CH3COO-, pKa = 4.74 
E) OH-, pKa = 15.73 
A) CN-, pKa = 9.31 
B) CF3COO-, pKa = 0.23 
C) CH3C(=O)CH3, pKa = -7.2 
D) CH3COO-, pKa = 4.74 
E) OH-, pKa = 15.73

Question 19

Give the organic product of the following reaction.

Accepted Answer

The answer of Give the organic product of the following...

Question 20

Which of the following is a balanced chemical equation that represents the reaction of 3-ethyl-2-methylhexane with Br2?

Accepted Answer

A) C7H14 + Br2 → C7H12Br + HBr 
B) C9H20 + Br2 → C9H19Br + HBr 
C) C6H12 + Br2 → C6H10Br2 + H2 
D) C9H18 + Br2 → C9H16Br2 + H2 
E) C6H12 + Br2 → C6H11Br + HBr 
A) C7H14 + Br2 → C7H12Br + HBr 
B) C9H20 + Br2 → C9H19Br + HBr 
C) C6H12 + Br2 → C6H10Br2 + H2 
D) C9H18 + Br2 → C9H16Br2 + H2 
E) C6H12 + Br2 → C6H11Br + HBr

Exam 21: Organic Chemistry II: Reactions

What are polymers?

What are primary alcohols oxidized to?

Which combination of reagents would you use to brominate an aromatic compound?

Identify the step-growth polymer.

Determine the product(s)of the following reaction:

Determine the products of the following reaction:

Which of the following statements is TRUE?

In which of the following families would the strongest organic acids be found?

Complete and balance the following complete hydrogenation reaction: CH3CH2C CCH3 + 2H2 → ?

Predict the correct mechanism and product for the following reaction:

Find the suitable reagent for the transformation:

Which of the following is the balanced chemical equation for the addition of HBr to CH2=CHCH2CH3?

Which is the strongest organic acid?

Find the suitable base for the following reaction: CH3C(=O)CH3 + :B → CH3C(=O)CH2:- + H:B+ The pKa for CH3C(=O)CH3 (acetone)is 20. The formula for the base is followed by the pKa of its conjugate acid.

Which of the following statements is TRUE?

What is the correct order of increasing reactivity among acyl groups?

What are the correct products of the following reaction performed in the presence of an acid? C3H7COOH + C2H5OH →

Find the suitable base for the following reaction: C6H5OH + :B → C6H5O:- + H:B+ The pKa for C6H5OH (phenol)is 9.88. The formula for the base is followed by the pKa of its conjugate acid.

Give the organic product of the following reaction.

Which of the following is a balanced chemical equation that represents the reaction of 3-ethyl-2-methylhexane with Br2?

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 Metallury

Transition Metals and Coordination Compounds

Filters

Complete and balance the following complete hydrogenation reaction: CH₃CH₂C CCH₃ + 2H₂ → ?

Which of the following is the balanced chemical equation for the addition of HBr to CH₂=CHCH₂CH₃?

Find the suitable base for the following reaction: CH₃C(=O)CH₃ + :B → CH₃C(=O)CH₂:^- + H:B⁺ The pKa for CH₃C(=O)CH₃ (acetone)is 20. The formula for the base is followed by the pKa of its conjugate acid.

What are the correct products of the following reaction performed in the presence of an acid? C₃H₇COOH + C₂H₅OH →

Find the suitable base for the following reaction: C₆H₅OH + :B → C₆H₅O:^- + H:B⁺ The pKa for C₆H₅OH (phenol)is 9.88. The formula for the base is followed by the pKa of its conjugate acid.

Which of the following is a balanced chemical equation that represents the reaction of 3-ethyl-2-methylhexane with Br₂?