Question 1

Which acid-base reaction would not take place as written?

Accepted Answer

A) CH3Li + CH3CH2OH $\to$CH4 + CH3CH2OLi 
B) HC$\equiv$CH + NaOH $\to$HC$\equiv$CNa + H2O 
C) HC$\equiv$CNa + H2O $\to$HC$\equiv$CH + NaOH 
D) CH3OH + NaH $\to$CH3ONa + H2 
E) CH3CO2H + CH3ONa $\to$CH3CO2Na + CH3OH 
A) CH3Li + CH3CH2OH $\to$CH4 + CH3CH2OLi 
B) HC$\equiv$CH + NaOH $\to$HC$\equiv$CNa + H2O 
C) HC$\equiv$CNa + H2O $\to$HC$\equiv$CH + NaOH 
D) CH3OH + NaH $\to$CH3ONa + H2 
E) CH3CO2H + CH3ONa $\to$CH3CO2Na + CH3OH

Question 2

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

Question 3

The correct sequence of the ions shown,in order of increasing basicity,is:

Accepted Answer

A) CH3CH2:-  2=CH:- - 
B) CH3CH2:- - 2=CH:- 
C) HC$\equiv$C:- 3CH2:- 2=CH:- 
D) CH2=CH:- - 3CH2:- 
E) HC$\equiv$C:- 2=CH:- 3CH2:- 
A) CH3CH2:-  2=CH:- - 
B) CH3CH2:- - 2=CH:- 
C) HC$\equiv$C:- 3CH2:- 2=CH:- 
D) CH2=CH:- - 3CH2:- 
E) HC$\equiv$C:- 2=CH:- 3CH2:-

Question 4

Isotope labeling is an important tool in the study of reaction mechanisms.How will you selectively deuterate the specified hydrogen atom,indicated by an arrow,in the following compound? Use equations to clarify your answer and briefly explain your rationale.

Accepted Answer

The specified hydrogen is attached to an

Question 5

Which set contains non-equivalent members?

Accepted Answer

A) enthalpy and heat content 
B) endothermic reaction and +$\Delta$H 
C) exothermic reaction and -$\Delta$H 
D) kinetic energy and energy of motion 
E) high energy and high stability 
A) enthalpy and heat content 
B) endothermic reaction and +$\Delta$H 
C) exothermic reaction and -$\Delta$H 
D) kinetic energy and energy of motion 
E) high energy and high stability

Question 6

Which of the following organic compounds is the strongest acid?

Accepted Answer

A) C6H12 pKa = 52 
B) CH3CH3 pKa = 50 
C) CH3CH2OH pKa = 18 
D) CH3CO2H pKa = 5 
E) CF3CO2H pKa = 0 
A) C6H12 pKa = 52 
B) CH3CH3 pKa = 50 
C) CH3CH2OH pKa = 18 
D) CH3CO2H pKa = 5 
E) CF3CO2H pKa = 0

Question 7

For the following acid / base reaction which statement is true taking $\Delta$H into consideration?

Accepted Answer

A) The reaction is an exothermic reaction and $\Delta$H is approximately zero. 
B) The reaction is an endothermic reaction and $\Delta$H is negative. 
C) The reaction is an exothermic reaction and $\Delta$H is negative. 
D) The reaction is an exothermic reaction and $\Delta$H is positive. 
E) None of these choices. 
A) The reaction is an exothermic reaction and $\Delta$H is approximately zero. 
B) The reaction is an endothermic reaction and $\Delta$H is negative. 
C) The reaction is an exothermic reaction and $\Delta$H is negative. 
D) The reaction is an exothermic reaction and $\Delta$H is positive. 
E) None of these choices.

Question 8

You are planning to purify an impure sample of benzoic acid,known to be contaminated with naphthalene.Propose a strategy for purifying this sample,making use of acid-base principles,using equations to further clarify your answer.

Accepted Answer

Benzoic acid reacts with aqueous NaOH to

Question 9

When proton transfer reactions reach equilibrium,there have been formed

Accepted Answer

A) the weaker acid and the weaker base. 
B) the weaker acid and the stronger base. 
C) the stronger acid and the weaker base. 
D) the stronger acid and the stronger base. 
E) All proton transfers go to completion; they are not equilibrium processes. 
A) the weaker acid and the weaker base. 
B) the weaker acid and the stronger base. 
C) the stronger acid and the weaker base. 
D) the stronger acid and the stronger base. 
E) All proton transfers go to completion; they are not equilibrium processes.

Which acid-base reaction would not take place as written?

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

The correct sequence of the ions shown,in order of increasing basicity,is:

Isotope labeling is an important tool in the study of reaction mechanisms.How will you selectively deuterate the specified hydrogen atom,indicated by an arrow,in the following compound? Use equations to clarify your answer and briefly explain your rationale.

Which set contains non-equivalent members?

Which of the following organic compounds is the strongest acid?

For the following acid / base reaction which statement is true taking $\Delta$ H into consideration? $For the following acid / base reaction which statement is true taking \Delta H into consideration?$

You are planning to purify an impure sample of benzoic acid,known to be contaminated with naphthalene.Propose a strategy for purifying this sample,making use of acid-base principles,using equations to further clarify your answer.

When proton transfer reactions reach equilibrium,there have been formed

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

Exam 3: Acids and Bases

Which acid-base reaction would not take place as written?

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

The correct sequence of the ions shown,in order of increasing basicity,is:

Isotope labeling is an important tool in the study of reaction mechanisms.How will you selectively deuterate the specified hydrogen atom,indicated by an arrow,in the following compound? Use equations to clarify your answer and briefly explain your rationale.

Which set contains non-equivalent members?

Which of the following organic compounds is the strongest acid?

For the following acid / base reaction which statement is true taking Δ\DeltaΔ H into consideration?

You are planning to purify an impure sample of benzoic acid,known to be contaminated with naphthalene.Propose a strategy for purifying this sample,making use of acid-base principles,using equations to further clarify your answer.

When proton transfer reactions reach equilibrium,there have been formed

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

For the following acid / base reaction which statement is true taking $\Delta$ H into consideration? $For the following acid / base reaction which statement is true taking \Delta H into consideration?$