Question 1

Black coffee has a pH of 5.0. What is the concentration of H3O+ in the coffee?

Accepted Answer

A)  1 F1F1F1S1F1F1F10 10-5 M 
B)  1 F1F1F1S1F1F1F10 10-9 M 
C)  1 F1F1F1S1F1F1F10 10-7 M 
D)  1 F1F1F1S1F1F1F10 10-11 M 
A)  1 F1F1F1S1F1F1F10 10-5 M 
B)  1 F1F1F1S1F1F1F10 10-9 M 
C)  1 F1F1F1S1F1F1F10 10-7 M 
D)  1 F1F1F1S1F1F1F10 10-11 M

Question 2

The conjugate base of HSO4- is ____________________.

Accepted Answer

Question 3

At 25°C the term [H3O+][OH-] equals

Accepted Answer

A)  1 F1F1F1S1F1F1F10 10-7. 
B)  2 F1F1F1S1F1F1F10 10-14. 
C)  1 F1F1F1S1F1F1F10 1014. 
D)  1 F1F1F1S1F1F1F10 10-14. 
A)  1 F1F1F1S1F1F1F10 10-7. 
B)  2 F1F1F1S1F1F1F10 10-14. 
C)  1 F1F1F1S1F1F1F10 1014. 
D)  1 F1F1F1S1F1F1F10 10-14.

Question 4

In a dilute solution of base at 25°C, the concentration of H3O+ is 1 F1F1F1S1F1F1F10 10-9 M. Calculate the concentration of OH- ions.

Accepted Answer

A)  1 F1F1F1S1F1F1F10 10-9 M 
B)  1 F1F1F1S1F1F1F10 10-7 M 
C)  1 F1F1F1S1F1F1F10 10-5 M 
D)  1 F1F1F1S1F1F1F10 10-2 M 
A)  1 F1F1F1S1F1F1F10 10-9 M 
B)  1 F1F1F1S1F1F1F10 10-7 M 
C)  1 F1F1F1S1F1F1F10 10-5 M 
D)  1 F1F1F1S1F1F1F10 10-2 M

Question 5

Acid is produced in the stomach by

Accepted Answer

A)  histamine. 
B)  H2 receptors. 
C)  proton pump. 
D)  H. pylori. 
A)  histamine. 
B)  H2 receptors. 
C)  proton pump. 
D)  H. pylori.

Question 6

To produce a buffer from a weak acid, you would add

Accepted Answer

A)  water. 
B)  its conjugate base. 
C)  another weak acid. 
D)  a salt. 
A)  water. 
B)  its conjugate base. 
C)  another weak acid. 
D)  a salt.

Question 7

Which of the solutions below will be highly conductive of electricity?

Accepted Answer

A)  0.1 M acetic acid, CH3CO2H 
B)  0.1 M formic acid, CHO2H 
C)  0.1 M hydrochloric acid, HCl 
D)  0.1 M lactic acid, CH3CH(OH)CO2H 
A)  0.1 M acetic acid, CH3CO2H 
B)  0.1 M formic acid, CHO2H 
C)  0.1 M hydrochloric acid, HCl 
D)  0.1 M lactic acid, CH3CH(OH)CO2H

Question 8

In the Brønsted-Lowry model the acid

Accepted Answer

A)  donates an OH. 
B)  accepts a H+. 
C)  donates a H+. 
D)  accepts an OH. 
A)  donates an OH. 
B)  accepts a H+. 
C)  donates a H+. 
D)  accepts an OH.

Question 9

The bisulfite ion (HSO3-) is a weak acid. What is the missing species in the reversible dissociation of bisulfite in aqueous solution? HSO3-(aq) + H2O(l) F1S1S1W1F1F1F10 H3O+(aq) + ?

Accepted Answer

A)  SO32- 
B)  H2SO3 
C)  H2S + O2 
D)  SO2 + O2 
A)  SO32- 
B)  H2SO3 
C)  H2S + O2 
D)  SO2 + O2

Question 10

Balance the equation for the neutralization of aluminum hydroxide, Al(OH)3, with HCl.

Accepted Answer

A)  Al(OH)3(aq) + HCl(aq) F1S1S1W1F1F1F10 H2O(l) + AlCl3(aq) 
B)  Al(OH)3(aq) + 2HCl(aq) F1S1S1W1F1F1F10 2H2O(l) + AlCl3(aq) 
C)  Al(OH)3(aq) + 3HCl(aq) F1S1S1W1F1F1F10 3H2O(l) + AlCl3(aq) 
D)  Al(OH)3(aq) + 4HCl(aq) F1S1S1W1F1F1F10 4H2O(l) + AlCl3(aq) 
A)  Al(OH)3(aq) + HCl(aq) F1S1S1W1F1F1F10 H2O(l) + AlCl3(aq) 
B)  Al(OH)3(aq) + 2HCl(aq) F1S1S1W1F1F1F10 2H2O(l) + AlCl3(aq) 
C)  Al(OH)3(aq) + 3HCl(aq) F1S1S1W1F1F1F10 3H2O(l) + AlCl3(aq) 
D)  Al(OH)3(aq) + 4HCl(aq) F1S1S1W1F1F1F10 4H2O(l) + AlCl3(aq)

Question 11

Which of the following solutions is basic?

Accepted Answer

A)  [H3O+] = 1 F1F1F1S1F1F1F10 10-8 M 
B)  [H3O+] = 1 F1F1F1S1F1F1F10 10-7 M 
C)  [H3O+] = 1 F1F1F1S1F1F1F10 10-5 M 
D)  [H3O+] = 1 F1F1F1S1F1F1F10 10-3 M 
A)  [H3O+] = 1 F1F1F1S1F1F1F10 10-8 M 
B)  [H3O+] = 1 F1F1F1S1F1F1F10 10-7 M 
C)  [H3O+] = 1 F1F1F1S1F1F1F10 10-5 M 
D)  [H3O+] = 1 F1F1F1S1F1F1F10 10-3 M

Question 12

Milk has a H3O+ concentration of 1 F1F1F1S1F1F1F10 10-6 M. What is the pH of the milk?

Accepted Answer

A)  5 
B)  6 
C)  7 
D)  8 
A)  5 
B)  6 
C)  7 
D)  8

Question 13

A carbonic acid (H2CO3) and bicarbonate (HCO3-) forms a buffer in the blood stream. Excess acid in the blood stream causes the

Accepted Answer

A)  pH to rise dramatically. 
B)  carbonic acid to be consumed with very little change in pH. 
C)  bicarbonate to be consumed with very little change in pH. 
D)  pH to drop dramatically. 
A)  pH to rise dramatically. 
B)  carbonic acid to be consumed with very little change in pH. 
C)  bicarbonate to be consumed with very little change in pH. 
D)  pH to drop dramatically.

Question 14

Lemon juice has a pH of 2.0. What is the concentration of H3O+ in the juice?

Accepted Answer

A)  1 F1F1F1S1F1F1F10 10-2 M 
B)  1 F1F1F1S1F1F1F10 10-7 M 
C)  1 F1F1F1S1F1F1F10 10-5 M 
D)  1 F1F1F1S1F1F1F10 10-12 M 
A)  1 F1F1F1S1F1F1F10 10-2 M 
B)  1 F1F1F1S1F1F1F10 10-7 M 
C)  1 F1F1F1S1F1F1F10 10-5 M 
D)  1 F1F1F1S1F1F1F10 10-12 M

Question 15

Which of the following acids are an inorganic acid?

Accepted Answer

A)  lactic acid 
B)  ascorbic acid 
C)  acetic acid 
D)  sulfuric acid 
A)  lactic acid 
B)  ascorbic acid 
C)  acetic acid 
D)  sulfuric acid

Question 16

In pure water which is in greater concentration H3O+ or OH-?

Accepted Answer

A)  [H3O+] > [OH-] 
B)  [H3O+] -] 
C)  [H3O+] = [OH-] 
D)  It varies depending upon temperature. 
A)  [H3O+] > [OH-] 
B)  [H3O+] -] 
C)  [H3O+] = [OH-] 
D)  It varies depending upon temperature.

Question 17

Iron(III) ion, Fe3+ produces acidic aqueous solutions. Why can it not be a Brønsted-Lowry acid?

Accepted Answer

It does not have a h

Question 18

Which of the following drugs is responsible for reducing the production of acid in the stomach?

Accepted Answer

A)  antacid 
B)  histamine 
C)  H2 receptor blockers 
D)  proton pump 
A)  antacid 
B)  histamine 
C)  H2 receptor blockers 
D)  proton pump

Question 19

The conjugate base of HCl is

Accepted Answer

A)  H2Cl+. 
B)  OH. 
C)  H3O+. 
D)  Cl. 
A)  H2Cl+. 
B)  OH. 
C)  H3O+. 
D)  Cl.

Question 20

At 25°C the concentration of H3O+ in a solution is 1 F1F1F1S1F1F1F10 10-2 M. What is the pH?

Accepted Answer

A)  -2 
B)  0.5 
C)  0.01 
D)  2 
A)  -2 
B)  0.5 
C)  0.01 
D)  2

Black coffee has a pH of 5.0. What is the concentration of H₃O⁺ in the coffee?

The conjugate base of HSO₄^- is ____________________.

At 25°C the term [H₃O⁺][OH^-] equals

In a dilute solution of base at 25°C, the concentration of H₃O⁺ is 1  10^-9 M. Calculate the concentration of OH^- ions.

Acid is produced in the stomach by

To produce a buffer from a weak acid, you would add

Which of the solutions below will be highly conductive of electricity?

In the Brønsted-Lowry model the acid

The bisulfite ion (HSO₃^-) is a weak acid. What is the missing species in the reversible dissociation of bisulfite in aqueous solution? HSO₃^-(aq) + H₂O(l)  H₃O⁺(aq) + ?

Balance the equation for the neutralization of aluminum hydroxide, Al(OH)₃, with HCl.

Which of the following solutions is basic?

Milk has a H₃O⁺ concentration of 1  10^-6 M. What is the pH of the milk?

A carbonic acid (H₂CO₃) and bicarbonate (HCO₃^-) forms a buffer in the blood stream. Excess acid in the blood stream causes the

Lemon juice has a pH of 2.0. What is the concentration of H₃O⁺ in the juice?

Which of the following acids are an inorganic acid?

In pure water which is in greater concentration H₃O⁺ or OH^-?

Iron(III) ion, Fe³⁺ produces acidic aqueous solutions. Why can it not be a Brønsted-Lowry acid?

Which of the following drugs is responsible for reducing the production of acid in the stomach?

The conjugate base of HCl is

At 25°C the concentration of H₃O⁺ in a solution is 1  10^-2 M. What is the pH?

Antibiotics and Resistance: an Introduction to the Molecules of Life

Elements of Life and Death: The Chemistry of Elements and Atoms

Chemical Bonding

Carbon: The Element of Life

Molecular Diversity

Chemical Reactions

Monomers and Polymers

The Unusual Nature of Water

Molecules and Ions in Solution

Measuring Concentration

DNA: The Molecule of Heredity

From DNA to Proteins

Enzymes As Biological Catalysts

Drug Development

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Exam 11: Acids and Bases

Black coffee has a pH of 5.0. What is the concentration of H3O+ in the coffee?

The conjugate base of HSO4- is ____________________.

At 25°C the term [H3O+][OH-] equals

In a dilute solution of base at 25°C, the concentration of H3O+ is 1  10-9 M. Calculate the concentration of OH- ions.

Acid is produced in the stomach by

To produce a buffer from a weak acid, you would add

Which of the solutions below will be highly conductive of electricity?

In the Brønsted-Lowry model the acid

The bisulfite ion (HSO3-) is a weak acid. What is the missing species in the reversible dissociation of bisulfite in aqueous solution? HSO3-(aq) + H2O(l)  H3O+(aq) + ?

Balance the equation for the neutralization of aluminum hydroxide, Al(OH)3, with HCl.

Which of the following solutions is basic?

Milk has a H3O+ concentration of 1  10-6 M. What is the pH of the milk?

A carbonic acid (H2CO3) and bicarbonate (HCO3-) forms a buffer in the blood stream. Excess acid in the blood stream causes the

Lemon juice has a pH of 2.0. What is the concentration of H3O+ in the juice?

Which of the following acids are an inorganic acid?

In pure water which is in greater concentration H3O+ or OH-?

Iron(III) ion, Fe3+ produces acidic aqueous solutions. Why can it not be a Brønsted-Lowry acid?

Which of the following drugs is responsible for reducing the production of acid in the stomach?

The conjugate base of HCl is

At 25°C the concentration of H3O+ in a solution is 1  10-2 M. What is the pH?

Antibiotics and Resistance: an Introduction to the Molecules of Life

Elements of Life and Death: The Chemistry of Elements and Atoms

Chemical Bonding

Carbon: The Element of Life

Molecular Diversity

Chemical Reactions

Monomers and Polymers

The Unusual Nature of Water

Molecules and Ions in Solution

Measuring Concentration

DNA: The Molecule of Heredity

From DNA to Proteins

Enzymes As Biological Catalysts

Drug Development

Filters

Black coffee has a pH of 5.0. What is the concentration of H₃O⁺ in the coffee?

The conjugate base of HSO₄^- is ____________________.

At 25°C the term [H₃O⁺][OH^-] equals

In a dilute solution of base at 25°C, the concentration of H₃O⁺ is 1  10^-9 M. Calculate the concentration of OH^- ions.

The bisulfite ion (HSO₃^-) is a weak acid. What is the missing species in the reversible dissociation of bisulfite in aqueous solution? HSO₃^-(aq) + H₂O(l)  H₃O⁺(aq) + ?

Balance the equation for the neutralization of aluminum hydroxide, Al(OH)₃, with HCl.

Milk has a H₃O⁺ concentration of 1  10^-6 M. What is the pH of the milk?

A carbonic acid (H₂CO₃) and bicarbonate (HCO₃^-) forms a buffer in the blood stream. Excess acid in the blood stream causes the

Lemon juice has a pH of 2.0. What is the concentration of H₃O⁺ in the juice?

In pure water which is in greater concentration H₃O⁺ or OH^-?

Iron(III) ion, Fe³⁺ produces acidic aqueous solutions. Why can it not be a Brønsted-Lowry acid?

At 25°C the concentration of H₃O⁺ in a solution is 1  10^-2 M. What is the pH?