Question 1

What is the conjugate base of phosphoric acid?

Accepted Answer

A)  HPO42- 
B)  H2PO4- 
C)  HPO32- 
D)  PO43- 
E)  None of these 
A)  HPO42- 
B)  H2PO4- 
C)  HPO32- 
D)  PO43- 
E)  None of these B

Question 2

Determine if NaOH is a suitable reagent to deprotonate the following compound. Explain why.

Accepted Answer

No.
The base has a negative charge on the more electronegative oxygen, whereas the conjugate base has a negative charge on the less electronegative carbon atom.

Question 3

Identify the acid and the base and provide a curved arrow mechanism for the following reaction.

Accepted Answer

The answer of Identify the acid and the base and...

Question 4

What is the strongest base that can be used with water as a solvent?

Accepted Answer

The answer of What is the strongest base that can...

Question 5

For the following reaction, which reactant functions as an acid?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of the above 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of the above

Question 6

Identify the acid and the base and provide a curved arrow mechanism for the following reaction.

Accepted Answer

The answer of Identify the acid and the base and...

Question 7

Which of the following compounds is not a Lewis acid?

Accepted Answer

A)  BF3 
B)  FeCl3 
C)  CH3CH2+ 
D)  Ph3P 
E)  none of these 
A)  BF3 
B)  FeCl3 
C)  CH3CH2+ 
D)  Ph3P 
E)  none of these

Question 8

Provide a curved arrow mechanism for the following acid-base reaction.

Accepted Answer

The answer of Provide a curved arrow mechanism for the...

Question 9

Which of the following compounds is most acidic?

Accepted Answer

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

Question 10

Which of the following compounds is most basic?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  All of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  All of these

Question 11

For the following acid-base reaction, predict which side of the equilibrium is favored.

Accepted Answer

A)  favor right side 
B)  favor left side 
C)  neither 
A)  favor right side 
B)  favor left side 
C)  neither

Question 12

A gain of proton by a Brønsted-Lowry base results in a ___.

Accepted Answer

A)  Lewis acid 
B)  conjugate acid 
C)  conjugate base 
D)  conjugate acid-base pair 
E)  None of these 
A)  Lewis acid 
B)  conjugate acid 
C)  conjugate base 
D)  conjugate acid-base pair 
E)  None of these

Question 13

What is a counterion in (CH3)3COK?

Accepted Answer

Question 14

The following reaction mechanism contains mistakes. Which of the following statements correctly describes the curved arrows consistent with the reaction?

Accepted Answer

A)  The curved arrow should start at the carbonyl oxygen atom 
B)  The curved arrow should start at the hydride, go to the hydrogen connected to oxygen and a second arrow should start from the O-H covalent bond and go to the oxygen 
C)  The curved arrow should start at the oxygen atom of the OH 
D)  There should be two more arrows   
A)  The curved arrow should start at the carbonyl oxygen atom 
B)  The curved arrow should start at the hydride, go to the hydrogen connected to oxygen and a second arrow should start from the O-H covalent bond and go to the oxygen 
C)  The curved arrow should start at the oxygen atom of the OH 
D)  There should be two more arrows

Question 15

A Lewis base is defined as _____.

Accepted Answer

A)  a proton donor 
B)  an electron pair donor 
C)  a proton acceptor 
D)  an electron pair acceptor 
A)  a proton donor 
B)  an electron pair donor 
C)  a proton acceptor 
D)  an electron pair acceptor

Question 16

Determine if H2O is a suitable reagent to protonate the following compound.

Accepted Answer

A)  yes 
B)  no 
A)  yes 
B)  no

Question 17

The following compound is best classified as a ____.

Accepted Answer

A)  Brønsted-Lowry acid 
B)  Lewis acid 
C)  Brønsted-Lowry base 
D)  Lewis base 
E)  Both C & D 
A)  Brønsted-Lowry acid 
B)  Lewis acid 
C)  Brønsted-Lowry base 
D)  Lewis base 
E)  Both C & D

Question 18

For the following reaction identify the acid and the base and predict the products. Draw the curved arrow mechanism for the formation of products and predict the direction of the equilibrium.

Accepted Answer

The answer of For the following reaction identify the acid...

Question 19

Identify the Brønsted-Lowry base in the following reaction.

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of the above 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of the above

Question 20

Which of the following compounds is most acidic?

Accepted Answer

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

Exam 3: Acids and Bases

What is the conjugate base of phosphoric acid?

Determine if NaOH is a suitable reagent to deprotonate the following compound. Explain why.

Identify the acid and the base and provide a curved arrow mechanism for the following reaction.

What is the strongest base that can be used with water as a solvent?

For the following reaction, which reactant functions as an acid?

Identify the acid and the base and provide a curved arrow mechanism for the following reaction.

Which of the following compounds is not a Lewis acid?

Provide a curved arrow mechanism for the following acid-base reaction.

Which of the following compounds is most acidic?

Which of the following compounds is most basic?

For the following acid-base reaction, predict which side of the equilibrium is favored.

A gain of proton by a Brønsted-Lowry base results in a ___.

What is a counterion in (CH3)3COK?

The following reaction mechanism contains mistakes. Which of the following statements correctly describes the curved arrows consistent with the reaction?

A Lewis base is defined as _____.

Determine if H2O is a suitable reagent to protonate the following compound.

The following compound is best classified as a ____.

For the following reaction identify the acid and the base and predict the products. Draw the curved arrow mechanism for the formation of products and predict the direction of the equilibrium.

Identify the Brønsted-Lowry base in the following reaction.

Which of the following compounds is most acidic?

A Review of General Chemistry: Electrons, Bonds, and Molecular Properties

Molecular Representations

Alkanes and Cycloalkanes

Stereoisomerism

Chemical Reactivity and Mechanisms

Alkyl Halides: Nucleophilic Substitution and Elimination Reactions

Addition Reactions of Alkenes

Alkynes

Radical Reactions

Synthesis

Alcohols and Phenols

Ethers and Epoxides; Thiols and Sulfides

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Conjugated Pi Systems and Pericyclic Reactions

Aromatic Compounds

Aromatic Substitution Reactions

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Alpha Carbon Chemistry: Enols and Enolates

Amines

Introduction to Organometallic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

What is a counterion in (CH₃)₃COK?

Determine if H₂O is a suitable reagent to protonate the following compound.