Question 1

What is the value of the equilibrium constant, Keq, for the following reaction?

Accepted Answer

A) "1013" 
B) "10-13" 
C) "13" 
D) "1/13" 
A) "1013" 
B) "10-13" 
C) "13" 
D) "1/13"

Question 2

Which of the following compounds is the strongest acid?

Accepted Answer

A) CH3COOH 
B) FCH2COOH 
C) ClCH2COOH 
D) BrCH2COOH 
A) CH3COOH 
B) FCH2COOH 
C) ClCH2COOH 
D) BrCH2COOH

Question 3

Which of the following is easiest to deprotonate?

Accepted Answer

A) CH4 
B) CH3CH3 
C) CH2=CH2 
D) HC$\equiv$CH 
A) CH4 
B) CH3CH3 
C) CH2=CH2 
D) HC$\equiv$CH

Question 4

What is the approximate pKa value of HCl?

Accepted Answer

A) -7 
B) 5 
C) 16 
D) 51 
A) -7 
B) 5 
C) 16 
D) 51

Question 5

In the following list, there are four Lewis acids, CH3OH, HCl, BCl3 and FeBr3.

Accepted Answer

A) True 
 B)False

Question 6

What is the approximate pKa value of acetic acid?

Accepted Answer

A) -7 
B) 5 
C) 16 
D) 51 
A) -7 
B) 5 
C) 16 
D) 51

Question 7

Which of the following compounds has the highest pKa?

Accepted Answer

A) SiH4 
B) H2S 
C) PH3 
D) HCl 
A) SiH4 
B) H2S 
C) PH3 
D) HCl

Question 8

Under which of the following conditions will a reaction be spontaneous when $\Delta$H$\circ$ > 0?

Accepted Answer

A) "T$\Delta$S$\circ$ = 0" 
B) "T$\Delta$S$\circ$ > $\Delta$H$\circ$" 
C) "T$\Delta$S$\circ$ $\circ$" 
D) "$\Delta$G$\circ$= 0" 
A) "T$\Delta$S$\circ$ = 0" 
B) "T$\Delta$S$\circ$ > $\Delta$H$\circ$" 
C) "T$\Delta$S$\circ$ $\circ$" 
D) "$\Delta$G$\circ$= 0"

Question 9

Complete the equation below for the protonation of 2-butene with HBr. Show the movement of pairs of electrons with curved arrows and provide the structures of the conjugate acid and conjugate base.

Accepted Answer

The answer of Complete the equation below for the protonation...

Question 10

Which of the following is the strongest acid?

Accepted Answer

A) CH3OH 
B) CH3CHO 
C) CH3COCH3 
D) CH3COOH 
A) CH3OH 
B) CH3CHO 
C) CH3COCH3 
D) CH3COOH

Question 11

Which of the following compounds has the lowest pKa?

Accepted Answer

A) H2O 
B) HBr 
C) NH3 
D) CH4 
A) H2O 
B) HBr 
C) NH3 
D) CH4

Question 12

Which of the following is the strongest acid?

Accepted Answer

A) CH3CH3 
B) CH3NH2 
C) CH3OH 
D) CH3F 
A) CH3CH3 
B) CH3NH2 
C) CH3OH 
D) CH3F

Question 13

Which acid will be almost completely deprotonated by NaOH?

Accepted Answer

The answer of Which acid will be almost completely deprotonated...

Question 14

Use curved arrows to show the movement of pairs of electrons in the following acid-base reaction and show the structures of the conjugate acid and conjugate base.

Accepted Answer

The answer of Use curved arrows to show the movement...

Question 15

Provide the equation that relates the equilibrium constant, Keq, to the acid dissociation constant, Ka, for the following equilibrium.

Accepted Answer

Question 16

Which acid has the strongest conjugate base?

Accepted Answer

The answer of Which acid has the strongest conjugate base?...

Question 17

Indole is pleasant smelling in highly dilute solutions and has been used in perfumery.   Indole can be classified as a Brønsted-Lowry base but not as a Lewis base..

Accepted Answer

A) True 
 B)False

Question 18

Which of the following compounds has the lowest pKa?

Accepted Answer

A) H2O 
B) H2S 
C) H2Se 
D) H2Te 
A) H2O 
B) H2S 
C) H2Se 
D) H2Te

Question 19

A species that lies at an energy maximum during an individual step in a reaction is termed ____________________.

Accepted Answer

The answer of A species that lies at an energy...

Question 20

Which of the following compounds is the strongest acid?

Accepted Answer

A) CH4 
B) CH3CH3 
C) H2C=CH2 
D) HC$\equiv$CH 
A) CH4 
B) CH3CH3 
C) H2C=CH2 
D) HC$\equiv$CH

Exam 4: Acids and Bases

What is the value of the equilibrium constant, Keq, for the following reaction?

Which of the following compounds is the strongest acid?

Which of the following is easiest to deprotonate?

What is the approximate pKa value of HCl?

In the following list, there are four Lewis acids, CH3OH, HCl, BCl3 and FeBr3.

What is the approximate pKa value of acetic acid?

Which of the following compounds has the highest pKa?

Under which of the following conditions will a reaction be spontaneous when Δ\DeltaΔ H ∘\circ∘ > 0?

Complete the equation below for the protonation of 2-butene with HBr. Show the movement of pairs of electrons with curved arrows and provide the structures of the conjugate acid and conjugate base.

Which of the following is the strongest acid?

Which of the following compounds has the lowest pKa?

Which of the following is the strongest acid?

Which acid will be almost completely deprotonated by NaOH?

Use curved arrows to show the movement of pairs of electrons in the following acid-base reaction and show the structures of the conjugate acid and conjugate base.

Provide the equation that relates the equilibrium constant, Keq, to the acid dissociation constant, Ka, for the following equilibrium.

Which acid has the strongest conjugate base?

Indole is pleasant smelling in highly dilute solutions and has been used in perfumery. Indole can be classified as a Brønsted-Lowry base but not as a Lewis base..

Which of the following compounds has the lowest pKa?

A species that lies at an energy maximum during an individual step in a reaction is termed ____________________.

Which of the following compounds is the strongest acid?

Covalent Bonding and Shapes of Molecules

Alkanes and Cycloalkanes

Stereoisomerism and Chirality

Alkenes: Bonding, Nomenclature, and Properties

Reactions of Alkenes

Alkynes

Haloalkanes, Halogenation, and Radical Reactions

Nucleophilic Substitution and Beta-Elimination

Alcohols

Ethers, Epoxides, and Sulfides

Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Mass Spectrometry

An Introduction to Organometallic Compounds

Aldehydes and Ketones

Carboxylic Acids

Functional Derivatives of Carboxylic Acids

Enolate Anions and Enamines

Dienes, Conjugated Systems, and Pericyclic Reactions

Benzene and the Concept of Aromaticity

Reactions of Benzene and Its Derivatives

Amines

Catalytic Carbon-Carbon Bond Formation

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids

Organic Polymer Chemistry

Filters

What is the value of the equilibrium constant, K_eq, for the following reaction?

What is the approximate pK_a value of HCl?

In the following list, there are four Lewis acids, CH₃OH, HCl, BCl₃ and FeBr₃.

What is the approximate pK_a value of acetic acid?

Which of the following compounds has the highest pK_a?

Under which of the following conditions will a reaction be spontaneous when $\Delta$ H^$\circ$ > 0?

Which of the following compounds has the lowest pK_a?

Provide the equation that relates the equilibrium constant, K_eq, to the acid dissociation constant, K_a, for the following equilibrium.

Which of the following compounds has the lowest pK_a?