Question 1

Rank the following compounds in order of increasing acidity,putting the least acidic first.

Accepted Answer

A) I < IV < III < II 
B) I < III < IV < II 
C) II < III < IV < I 
D) II < IV < III < I 
A) I < IV < III < II 
B) I < III < IV < II 
C) II < III < IV < I 
D) II < IV < III < I A

Question 2

Which of the following species is not a Brønsted-Lowry base?

Accepted Answer

A) BF3 
B) NH3 
C) H2O 
D) PO43- 
A) BF3 
B) NH3 
C) H2O 
D) PO43- A

Question 3

Which is the conjugate base in the following reaction?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV D

Question 4

What are the products of the following proton transfer reaction?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 5

Which is the conjugate base in the following reaction?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 6

What is the electrophilic site in the following compounds?

Accepted Answer

A) I = Carbon; II = carbon; III = boron. 
B) I = Chlorine; II = carbon; III = boron. 
C) I = Carbon; II = oxygen; III = boron. 
D) I = Carbon; II = carbon; III = fluorine. 
A) I = Carbon; II = carbon; III = boron. 
B) I = Chlorine; II = carbon; III = boron. 
C) I = Carbon; II = oxygen; III = boron. 
D) I = Carbon; II = carbon; III = fluorine.

Question 7

Which is the conjugate acid in the following reaction?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 8

Identify the Lewis base in the following reaction.

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 9

Which of the following species cannot act as both a Brønsted-Lowry acid and base?

Accepted Answer

A) HCO3- 
B) HSO4- 
C) HO- 
D) H2PO4- 
A) HCO3- 
B) HSO4- 
C) HO- 
D) H2PO4-

Question 10

Which of the following statements about a Brønsted-Lowry base is true?

Accepted Answer

A) The net charge may be zero,positive,or negative. 
B) All Brønsted-Lowry bases contain a lone pair of electrons or a π bond. 
C) All Brønsted-Lowry bases contain a proton. 
D) The net charge may be zero or positive. 
A) The net charge may be zero,positive,or negative. 
B) All Brønsted-Lowry bases contain a lone pair of electrons or a π bond. 
C) All Brønsted-Lowry bases contain a proton. 
D) The net charge may be zero or positive.

Question 11

Which of the following species can be both Lewis acid and Lewis base?

Accepted Answer

A) I,III,IV 
B) I,II,IV 
C) II,III,IV 
D) I,II,III 
A) I,III,IV 
B) I,II,IV 
C) II,III,IV 
D) I,II,III

Question 12

Which of the following statements about Lewis bases is true?

Accepted Answer

A) Lewis bases are electron pair acceptors. 
B) Lewis bases are electron pair donors. 
C) Lewis bases are proton donors. 
D) Lewis bases are proton acceptors. 
A) Lewis bases are electron pair acceptors. 
B) Lewis bases are electron pair donors. 
C) Lewis bases are proton donors. 
D) Lewis bases are proton acceptors.

Question 13

Which of the following concepts can be used to explain the difference in acidity between ethanol (CH3CH2OH)and 2-fluoroethanol (FCH2CH2OH)?

Accepted Answer

A) Size 
B) Inductive effect 
C) Resonance 
D) Hybridization 
A) Size 
B) Inductive effect 
C) Resonance 
D) Hybridization

Question 14

Which is the conjugate acid in the following reaction?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 15

Rank the following conjugate bases in order of increasing basicity,putting the least basic first.

Accepted Answer

A) II < I < III 
B) II < III < I 
C) I < II < III 
D) I < III < II 
A) II < I < III 
B) II < III < I 
C) I < II < III 
D) I < III < II

Question 16

Which of the following statements is a correct definition for a Brønsted-Lowry acid?

Accepted Answer

A) Proton acceptor 
B) Electron pair donor 
C) Electron pair acceptor 
D) Proton donor 
A) Proton acceptor 
B) Electron pair donor 
C) Electron pair acceptor 
D) Proton donor

Question 17

What is the direction of equilibrium when acetylene (C2H2)reacts with H2N- in an acid-base reaction?

Accepted Answer

A) Left 
B) Right 
C) Neither 
D) Cannot be determined 
A) Left 
B) Right 
C) Neither 
D) Cannot be determined

Question 18

Which of the following ranks the compounds in order of increasing acidity,putting the least acidic first?

Accepted Answer

A) CH4 2O 3 
B) H2O 3 4 
C) NH3 4 2O 
D) CH4 3 2O 
A) CH4 2O 3 
B) H2O 3 4 
C) NH3 4 2O 
D) CH4 3 2O

Question 19

Which of the following compounds is the strongest acid?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
A) I 
B) II 
C) III 
D) IV

Question 20

Which of the following statements about Lewis acids is true?

Accepted Answer

A) Lewis acids are proton donors. 
B) Lewis acids are proton acceptors. 
C) Lewis acids are electron pair donors. 
D) Lewis acids are electron pair acceptors. 
A) Lewis acids are proton donors. 
B) Lewis acids are proton acceptors. 
C) Lewis acids are electron pair donors. 
D) Lewis acids are electron pair acceptors.

Exam 2: Acids and Bases

Rank the following compounds in order of increasing acidity,putting the least acidic first.

Which of the following species is not a Brønsted-Lowry base?

Which is the conjugate base in the following reaction?

What are the products of the following proton transfer reaction?

Which is the conjugate base in the following reaction?

What is the electrophilic site in the following compounds?

Which is the conjugate acid in the following reaction?

Identify the Lewis base in the following reaction.

Which of the following species cannot act as both a Brønsted-Lowry acid and base?

Which of the following statements about a Brønsted-Lowry base is true?

Which of the following species can be both Lewis acid and Lewis base?

Which of the following statements about Lewis bases is true?

Which of the following concepts can be used to explain the difference in acidity between ethanol (CH3CH2OH)and 2-fluoroethanol (FCH2CH2OH)?

Which is the conjugate acid in the following reaction?

Rank the following conjugate bases in order of increasing basicity,putting the least basic first.

Which of the following statements is a correct definition for a Brønsted-Lowry acid?

What is the direction of equilibrium when acetylene (C2H2)reacts with H2N- in an acid-base reaction?

Which of the following ranks the compounds in order of increasing acidity,putting the least acidic first?

Which of the following compounds is the strongest acid?

Which of the following statements about Lewis acids is true?

Structure and Bonding

Introduction to Organic Molecules and Functional Groups

Alkanes

Stereochemistry

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols,ethers,and Related Compounds

Alkenes and Addition Reactions

Alkynes and Synthesis

Oxidation and Reduction

Radical Reactions

Conjugation, resonance, and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

Aldehydes and Ketones - Nucleophilic Addition

Carboxylic Acids and the Acidity of the O-H Bond

Carboxylic Acids and Their Derivatives - Nucleophilic Acyl Substitution

Substitution Reactions of Carbonyl Compounds at the a Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond-Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Synthetic Polymers

Lipids

Molecular Ion Peaks and Fragmentation Patterns

Analyzing Molecular Motion and Infrared Spectroscopy

Organic Spectroscopy Concepts

Filters

Which of the following concepts can be used to explain the difference in acidity between ethanol (CH₃CH₂OH)and 2-fluoroethanol (FCH₂CH₂OH)?

What is the direction of equilibrium when acetylene (C₂H₂)reacts with H₂N^- in an acid-base reaction?