Question 1

What is the major product for the following reaction?

Accepted Answer

A)    
B)    
C)    
D)    
E) No reaction 
A)    
B)    
C)    
D)    
E) No reaction

Question 2

Which sequence is the best one to use to prepare CH3C$\equiv$CD?

Accepted Answer

A)    
B)    
C)    
D)    
E) None of these choices will be successful. 
A)    
B)    
C)    
D)    
E) None of these choices will be successful.

Question 3

For the equilibrium     the two substances which are both acids are:

Accepted Answer

A) H2O and H3O+ 
B) CH3NH3+ and H2O 
C) CH3NH3+ and CH3NH2 
D) CH3NH3+ and H3O+ 
E) CH3NH2 and H2O 
A) H2O and H3O+ 
B) CH3NH3+ and H2O 
C) CH3NH3+ and CH3NH2 
D) CH3NH3+ and H3O+ 
E) CH3NH2 and H2O

Question 4

What is/are the product(s)of the following acid-base mechanism?

Accepted Answer

A)    
B)    
C)    
D)    
E) None of these choices. 
A)    
B)    
C)    
D)    
E) None of these choices.

Question 5

Which base would not effectively deprotonate benzoic acid (PhCOOH)?

Accepted Answer

A) i-PrMgBr 
B) NaOH 
C) NaH 
D) (i-Pr)2NLi 
E) All of these choices would effectively deprotonate benzoic acid. 
A) i-PrMgBr 
B) NaOH 
C) NaH 
D) (i-Pr)2NLi 
E) All of these choices would effectively deprotonate benzoic acid.

Question 6

What is the pH of a 1.0 M aqueous solution of CH3COOH given that its pKa value is 4.75?

Accepted Answer

A) 0 
B) 0.0021 
C) 0.0042 
D) 2.4 
E) 2.7 
A) 0 
B) 0.0021 
C) 0.0042 
D) 2.4 
E) 2.7

Question 7

For the following acid-base reaction,which statement is true taking $\Delta$S into consideration?

Accepted Answer

A) "$\Delta$G is negative and $\Delta$S is approximately zero" 
B) "$\Delta$G is positive and $\Delta$S is approximately zero" 
C) "$\Delta$G is positive and $\Delta$S is negative" 
D) "$\Delta$G is negative and $\Delta$S is positive" 
E) "None of these choices." 
A) "$\Delta$G is negative and $\Delta$S is approximately zero" 
B) "$\Delta$G is positive and $\Delta$S is approximately zero" 
C) "$\Delta$G is positive and $\Delta$S is negative" 
D) "$\Delta$G is negative and $\Delta$S is positive" 
E) "None of these choices."

Question 8

What is/are the product(s)of the following acid-base mechanism?

Accepted Answer

A)    
B)    
C)    
D)    
E) None of these choices. 
A)    
B)    
C)    
D)    
E) None of these choices.

Question 9

It is very difficult to deprotonate a hydrogen that is attached to an alkyne carbon as the pi bonds sterically block the base from extracting the hydrogen.

Accepted Answer

A) True 
 B)False

Question 10

Which is the strongest acid?

Accepted Answer

A) CH2ClCH2CH2CH2CH2CO2H 
B) CH3CHBrCH2CH2CH2CO2H 
C) CH3CH2CH2CBr2CH2CO2H 
D) CH3CH2CH2CHFCH2CO2H 
E) CH3CH2CH2CF2CH2CO2H 
A) CH2ClCH2CH2CH2CH2CO2H 
B) CH3CHBrCH2CH2CH2CO2H 
C) CH3CH2CH2CBr2CH2CO2H 
D) CH3CH2CH2CHFCH2CO2H 
E) CH3CH2CH2CF2CH2CO2H

Question 11

Which of the following is not a Bronsted-Lowry acid?

Accepted Answer

A) H2O 
B) (CH3)3N 
C) NH4+ 
D) CH3CO2H 
E) HC$\equiv$CH 
A) H2O 
B) (CH3)3N 
C) NH4+ 
D) CH3CO2H 
E) HC$\equiv$CH

Question 12

The amide ion,NH2-, is a base which can be used only in which of the solvents shown below:

Accepted Answer

A) CH3OH 
B) CH3CH2OH 
C) H2O 
D) D2O 
E) Liquid NH3 
A) CH3OH 
B) CH3CH2OH 
C) H2O 
D) D2O 
E) Liquid NH3

Question 13

Which combination of reagents is the least effective in generating sodium isopropoxide,(CH3)2CHONa?

Accepted Answer

A) (CH3)2CHOH + CH3Na 
B) (CH3)2CHOH + NaNH2 
C) (CH3)2CHOH + NaH 
D) (CH3)2CHOH + H2C=CHNa 
E) (CH3)2CHOH + CH3CH2ONa 
A) (CH3)2CHOH + CH3Na 
B) (CH3)2CHOH + NaNH2 
C) (CH3)2CHOH + NaH 
D) (CH3)2CHOH + H2C=CHNa 
E) (CH3)2CHOH + CH3CH2ONa

Question 14

The molecule or ion that is formed when an acid loses its proton is called the ___.

Accepted Answer

The answer of The molecule or ion that is formed...

Question 15

Reagents that seek to react with an electron-deficient center other than a proton are called ___.

Accepted Answer

The answer of Reagents that seek to react with an...

Question 16

Rank the bold-faced hydrogens for the following compounds from most acidic to least acidic.

Accepted Answer

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

Question 17

Which of the following is not a Lewis base?

Accepted Answer

A) NH3 
B) H- 
C) BF3 
D) H2O 
E) H3C- 
A) NH3 
B) H- 
C) BF3 
D) H2O 
E) H3C-

Question 18

If the following compound were treated with excess NaOH followed by an excess of D2O,what would be the structure of the new product formed?

Accepted Answer

Question 19

You are planning to carry out a reaction between propyne,CH3C≡CH and sodium amide,NaNH2.You also need to choose an appropriate solvent for carrying out the reaction.Would ethanol be suitable for this purpose? Explain your rationale clearly.

Accepted Answer

No,ethanol would be unsuitable for carry

Question 20

What reactants would give the following products?

Accepted Answer

A)    
B)    
C)    
D)    
E) No reaction 
A)    
B)    
C)    
D)    
E) No reaction

Exam 3: Acids and Bases

What is the major product for the following reaction?

Which sequence is the best one to use to prepare CH3C ≡\equiv≡ CD?

For the equilibrium the two substances which are both acids are:

What is/are the product(s)of the following acid-base mechanism?

Which base would not effectively deprotonate benzoic acid (PhCOOH)?

What is the pH of a 1.0 M aqueous solution of CH3COOH given that its pKa value is 4.75?

For the following acid-base reaction,which statement is true taking Δ\DeltaΔ S into consideration?

What is/are the product(s)of the following acid-base mechanism?

It is very difficult to deprotonate a hydrogen that is attached to an alkyne carbon as the pi bonds sterically block the base from extracting the hydrogen.

Which is the strongest acid?

Which of the following is not a Bronsted-Lowry acid?

The amide ion,NH2-, is a base which can be used only in which of the solvents shown below:

Which combination of reagents is the least effective in generating sodium isopropoxide,(CH3)2CHONa?

The molecule or ion that is formed when an acid loses its proton is called the ___.

Reagents that seek to react with an electron-deficient center other than a proton are called ___.

Rank the bold-faced hydrogens for the following compounds from most acidic to least acidic.

Which of the following is not a Lewis base?

If the following compound were treated with excess NaOH followed by an excess of D2O,what would be the structure of the new product formed?

You are planning to carry out a reaction between propyne,CH3C≡CH and sodium amide,NaNH2.You also need to choose an appropriate solvent for carrying out the reaction.Would ethanol be suitable for this purpose? Explain your rationale clearly.

What reactants would give the following products?

The Basics

Families of Carbon

Nomenclature and Conformations of Alkanes and Cycloalkanes

Stereochemistry

Nucleophilic Reactions

Alkenes and Alkynes I

Alkenes and Alkynes II

Nuclear Magnetic Resonance and Mass Spectrometry

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Reactions at the Α Carbon of Carbonyl Compounds

Condensation and Conjugate Addition Reactions of Carbonyl Compounds

Amines

Transition Metal Complexes

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Which sequence is the best one to use to prepare CH₃C $\equiv$ CD?

What is the pH of a 1.0 M aqueous solution of CH₃COOH given that its pK_a value is 4.75?

For the following acid-base reaction,which statement is true taking $\Delta$ S into consideration? $For the following acid-base reaction,which statement is true taking \Delta S into consideration?$

The amide ion,NH₂^-,is a base which can be used only in which of the solvents shown below:

Which combination of reagents is the least effective in generating sodium isopropoxide,(CH₃)₂CHONa?

If the following compound were treated with excess NaOH followed by an excess of D₂O,what would be the structure of the new product formed?

You are planning to carry out a reaction between propyne,CH₃C≡CH and sodium amide,NaNH₂.You also need to choose an appropriate solvent for carrying out the reaction.Would ethanol be suitable for this purpose? Explain your rationale clearly.