Question 1

What is the counterion in NaOCH2CH3?

Accepted Answer

A)  Na+ 
B)  NaO- 
C)  CH3CH2- 
D)  CH3CH2O- 
A)  Na+ 
B)  NaO- 
C)  CH3CH2- 
D)  CH3CH2O- A

Question 2

What is the conjugate base of nitric acid?

Accepted Answer

A)  NO3- 
B)  NO2- 
C)  HNO3 
D)  HNO2 
E)  None of these 
A)  NO3- 
B)  NO2- 
C)  HNO3 
D)  HNO2 
E)  None of these A

Question 3

For the following reaction mechanism, identify the error, if any and describe the modification necessary by drawing the correct mechanism.

Accepted Answer

There is only one arrow and it is going in the wrong direction. The tail of the curved arrow is placed on the hydrogen atom. The curved arrow represents motion of electrons and not the motion of atoms. The curved arrow must start from the base (high electron density) and should go to the proton on the acid (low electron density)

Question 4

Which of the following compounds is most acidic?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  None of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  None of these

Question 5

Which of the indicated protons is most acidic?

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 6

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

Accepted Answer

A)  Yes 
B)  No 
A)  Yes 
B)  No

Question 7

Which of the following compounds is most acidic?

Accepted Answer

A)  HF 
B)  HCl 
C)  HBr 
D)  HI 
A)  HF 
B)  HCl 
C)  HBr 
D)  HI

Question 8

For the following reaction, which reactant functions as a base?

Accepted Answer

A)  I 
B)  II 
C)  neither 
A)  I 
B)  II 
C)  neither

Question 9

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 10

Which is the conjugate acid in the following reaction?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  Both I & IV 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  Both I & IV

Question 11

A Brønsted-Lowry acid is defined as a ____ and a Brønsted-Lowry base is defined as a ____.

Accepted Answer

A)  proton acceptor, proton donor 
B)  proton donor, proton donor 
C)  proton acceptor, proton acceptor 
D)  proton donor, proton acceptor 
E)  None of these 
A)  proton acceptor, proton donor 
B)  proton donor, proton donor 
C)  proton acceptor, proton acceptor 
D)  proton donor, proton acceptor 
E)  None of these

Question 12

A Lewis base is defined as _____.

Accepted Answer

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

Question 13

CH3CH2OCH2CH3, 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 14

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 15

For the following reaction, identify the Lewis acid and the Lewis base and draw the curved arrow mechanism.

Accepted Answer

The answer of For the following reaction, identify the Lewis...

Question 16

Which of the indicated protons is most acidic?

Accepted Answer

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

Question 17

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 18

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 19

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

Accepted Answer

Favors the left side.
Sulfur i

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 counterion in NaOCH2CH3?

What is the conjugate base of nitric acid?

For the following reaction mechanism, identify the error, if any and describe the modification necessary by drawing the correct mechanism.

Which of the following compounds is most acidic?

Which of the indicated protons is most acidic?

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

Which of the following compounds is most acidic?

For the following reaction, which reactant functions as a base?

The following compound is best classified as a ____.

Which is the conjugate acid in the following reaction?

A Brønsted-Lowry acid is defined as a ____ and a Brønsted-Lowry base is defined as a ____.

A Lewis base is defined as _____.

CH3CH2OCH2CH3, is best classified as a ____.

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

For the following reaction, identify the Lewis acid and the Lewis base and draw the curved arrow mechanism.

Which of the indicated protons is most acidic?

Which of the following compounds is most basic?

Which of the following compounds is most basic?

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

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

Substitution Reactions

Alkenes: Structure and Preparation Via 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

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

What is the counterion in NaOCH₂CH₃?

A Brønsted-Lowry acid is defined as a and a Brønsted-Lowry base is defined as a .

CH₃CH₂OCH₂CH_3, is best classified as a ____.