Question 1

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

Accepted Answer

A) CH3Li + CH3CH2OH $\to$CH4 + CH3CH2OLi 
B) H2C=CH2 + NaOH $\to$H2C=CHNa + H2O 
C) CH3C≡CNa + H2O $\to$CH3C≡CH + NaOH 
D) (CH3)2CHOH + NaH $\to$(CH3)2CHONa + H2 
E) CH3CO2H + CH3ONa $\to$CH3CO2Na + CH3OH 
A) CH3Li + CH3CH2OH $\to$CH4 + CH3CH2OLi 
B) H2C=CH2 + NaOH $\to$H2C=CHNa + H2O 
C) CH3C≡CNa + H2O $\to$CH3C≡CH + NaOH 
D) (CH3)2CHOH + NaH $\to$(CH3)2CHONa + H2 
E) CH3CO2H + CH3ONa $\to$CH3CO2Na + CH3OH

Question 2

When drawing mechanisms,chemists generally use curved arrows.The curved arrow begins at a(n)___ rich area and points toward a(n)___ deficient area.

Accepted Answer

The answer of When drawing mechanisms,chemists generally use curved arrows.The...

Question 3

Which reaction of these potential acids and bases does not occur to any appreciable degree due to an unfavorable equilibrium?

Accepted Answer

A) NaOH(aq)+ CH3CH2CH2CO2H 
B) CH3CH2ONa in ethanol + ethene 
C) CH3Li in hexane + ethyne 
D) NaNH2 in liq.NH3 + ethanol 
E) NaC2H3O2(aq)+ HI 
A) NaOH(aq)+ CH3CH2CH2CO2H 
B) CH3CH2ONa in ethanol + ethene 
C) CH3Li in hexane + ethyne 
D) NaNH2 in liq.NH3 + ethanol 
E) NaC2H3O2(aq)+ HI

Question 4

Which base would not effectively deprotonate acetylene?

Accepted Answer

A) LiOCH3 
B) CH3Li 
C) CH3OCH2MgBr 
D) KH 
E) (CH3)2NLi 
A) LiOCH3 
B) CH3Li 
C) CH3OCH2MgBr 
D) KH 
E) (CH3)2NLi

Question 5

What is the conjugate base of ethanol?

Accepted Answer

A) CH3CH2O- 
B) CH3CH2- 
C) CH3CH2OH2+ 
D) CH3CH3 
E) CH3OCH3 
A) CH3CH2O- 
B) CH3CH2- 
C) CH3CH2OH2+ 
D) CH3CH3 
E) CH3OCH3

Question 6

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

Accepted Answer

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

Question 7

According to the Lewis definition,a base is a(n)___.

Accepted Answer

A) proton donor 
B) electron pair donor 
C) hydroxide ion donor 
D) hydrogen ion donor 
E) electron pair acceptor 
A) proton donor 
B) electron pair donor 
C) hydroxide ion donor 
D) hydrogen ion donor 
E) electron pair acceptor

Question 8

Which pair of species are both bases in the following reaction?

Accepted Answer

A) H2O and CN- 
B) H3O+ and H2O 
C) HCN and H3O+ 
D) HCN and CN-  
E) H3O+ and CN- 
A) H2O and CN- 
B) H3O+ and H2O 
C) HCN and H3O+ 
D) HCN and CN-  
E) H3O+ and CN-

Question 9

Draw an arrow pushing mechanism to illustrate the formation of t-butyl bromide from t-butanol and draw in the necessary intermediates and products formed.

Accepted Answer

The answer of Draw an arrow pushing mechanism to illustrate...

Question 10

Which base would most effectively deprotonate benzoic acid (PhCOOH)?

Accepted Answer

A) NaCl 
B) H2O 
C) NaO2CCH3 
D) t-BuOK 
E) All of these choices would effectively deprotonate benzoic acid. 
A) NaCl 
B) H2O 
C) NaO2CCH3 
D) t-BuOK 
E) All of these choices would effectively deprotonate benzoic acid.

Question 11

Which reaction of these potential acids and bases does not occur to any appreciable degree due to an unfavorable equilibrium?

Accepted Answer

A) NaNH2 + CH3CH2CH2CH2CH2OH 
B) CH3CH2CO2H + NaCl 
C) NaHCO3 + CH3CH2CO2H 
D) NaCH3 + CH3CH2CH2CH2CH2NH2 
E) All of these choices will occur due to a favorable equilibrium. 
A) NaNH2 + CH3CH2CH2CH2CH2OH 
B) CH3CH2CO2H + NaCl 
C) NaHCO3 + CH3CH2CO2H 
D) NaCH3 + CH3CH2CH2CH2CH2NH2 
E) All of these choices will occur due to a favorable equilibrium.

Question 12

Why cannot one determine the relative acid strengths of HClO4 and HNO3 using aqueous solutions of these acids?

Accepted Answer

A) The acids are insufficiently soluble for the measurements. 
B) A more basic solvent than H2O must be used. 
C) H2O is too basic a solvent for the distinction to be made. 
D) These oxidizing acids cause redox reactions to occur. 
E) Actually,the acid strengths can be determined using aqueous solutions. 
A) The acids are insufficiently soluble for the measurements. 
B) A more basic solvent than H2O must be used. 
C) H2O is too basic a solvent for the distinction to be made. 
D) These oxidizing acids cause redox reactions to occur. 
E) Actually,the acid strengths can be determined using aqueous solutions.

Question 13

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 endothermic 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 endothermic reaction and $\Delta$H is positive. 
E) None of these choices.

Question 14

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

Accepted Answer

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

Question 15

The isomer of alanine shown below is one of the 20 naturally occurring amino acids that are used to make proteins.Amino acids like alanine exist at neutral acidity (pH = 7)in the following form:   What would be the structure of alanine if HCl(aq)was added to lower the pH = 1? What would be the structure of alanine if NaOH(aq)was added until the pH = 12?

Accepted Answer

The answer of The isomer of alanine shown below is...

Question 16

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

Question 17

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

Accepted Answer

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

Question 18

What are the two fundamental types of energy?

Accepted Answer

potential

Question 19

Which base would not effectively deprotonate acetylene?

Accepted Answer

A) i-PrMgBr 
B) KH 
C) CH3OCH2Li 
D) (i-Pr)2NLi 
E) t-BuOK 
A) i-PrMgBr 
B) KH 
C) CH3OCH2Li 
D) (i-Pr)2NLi 
E) t-BuOK

Question 20

The basic species are arranged in decreasing order of basicity in the sequence:

Accepted Answer

A) F- > OCH3- > NH2- > CH3CH2- 
B) OCH3- > CH3CH2- > NH2- > F- 
C) CH3CH2- > NH2- > OCH3- > F- 
D) NH2- > CH3CH2- > F- > OCH3- 
E) NH2- > OCH3- > CH3CH2- > F- 
A) F- > OCH3- > NH2- > CH3CH2- 
B) OCH3- > CH3CH2- > NH2- > F- 
C) CH3CH2- > NH2- > OCH3- > F- 
D) NH2- > CH3CH2- > F- > OCH3- 
E) NH2- > OCH3- > CH3CH2- > F-

Exam 3: Acids and Bases

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

When drawing mechanisms,chemists generally use curved arrows.The curved arrow begins at a(n)___ rich area and points toward a(n)___ deficient area.

Which reaction of these potential acids and bases does not occur to any appreciable degree due to an unfavorable equilibrium?

Which base would not effectively deprotonate acetylene?

What is the conjugate base of ethanol?

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

According to the Lewis definition,a base is a(n)___.

Which pair of species are both bases in the following reaction?

Draw an arrow pushing mechanism to illustrate the formation of t-butyl bromide from t-butanol and draw in the necessary intermediates and products formed.

Which base would most effectively deprotonate benzoic acid (PhCOOH)?

Which reaction of these potential acids and bases does not occur to any appreciable degree due to an unfavorable equilibrium?

Why cannot one determine the relative acid strengths of HClO4 and HNO3 using aqueous solutions of these acids?

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

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

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

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

What are the two fundamental types of energy?

Which base would not effectively deprotonate acetylene?

The basic species are arranged in decreasing order of basicity in the sequence:

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

When drawing mechanisms,chemists generally use curved arrows.The curved arrow begins at a(n)_ rich area and points toward a(n)_ deficient area.

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

Why cannot one determine the relative acid strengths of HClO₄ and HNO₃ using aqueous solutions of these acids?

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

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

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