Question 1

Which of the following is a buffer system?

Accepted Answer

A)  H2CO3 and HCO3F1F1F1S1F1F1F10 
B)  NaCl and NaOH 
C)  HCl and NaOH 
D)  H2O and HCl 
E)  NaCl and NaNO3 
A)  H2CO3 and HCO3F1F1F1S1F1F1F10 
B)  NaCl and NaOH 
C)  HCl and NaOH 
D)  H2O and HCl 
E)  NaCl and NaNO3 A

Question 2

Which of the following statements best describe a neutralization reaction?

Accepted Answer

A)  An acid and base react to give a salt and sometimes water. 
B)  Two aqueous molecules react to give a liquid. 
C)  A positively charged ion reacts to give a neutral molecule. 
D)  An anion and a cation react to give a neutral molecule. 
E)  Two neutral molecules react to give a cation and an anion. 
A)  An acid and base react to give a salt and sometimes water. 
B)  Two aqueous molecules react to give a liquid. 
C)  A positively charged ion reacts to give a neutral molecule. 
D)  An anion and a cation react to give a neutral molecule. 
E)  Two neutral molecules react to give a cation and an anion. A

Question 3

Generally, strong bases are hydroxide salts of

Accepted Answer

A)  transition metals. 
B)  the halogens. 
C)  alkali and alkaline earth metals. 
D)  the noble gases. 
E)  any element. 
A)  transition metals. 
B)  the halogens. 
C)  alkali and alkaline earth metals. 
D)  the noble gases. 
E)  any element. C

Question 4

The boxed species in the following reaction is

Accepted Answer

A)  hydroxide. 
B)  hydronium. 
C)  a proton. 
D)  the acid. 
E)  the base. 
A)  hydroxide. 
B)  hydronium. 
C)  a proton. 
D)  the acid. 
E)  the base.

Question 5

The pKa of aspirin is 3.5. What is the Ka of aspirin?

Accepted Answer

A)  3.5 
B)  1000 
C)  0.54 
D)  3.2 F1F1F1S1F1F1F10 10-4 
E)  3.2 F1F1F1S1F1F1F10 103 
A)  3.5 
B)  1000 
C)  0.54 
D)  3.2 F1F1F1S1F1F1F10 10-4 
E)  3.2 F1F1F1S1F1F1F10 103

Question 6

A weak acid is also a _________ because it produces a low concentration of ions in solution.

Accepted Answer

A)  weak electrolyte 
B)  strong electrolyte 
C)  nonelectrolyte 
D)  weak base 
E)  strong acid 
A)  weak electrolyte 
B)  strong electrolyte 
C)  nonelectrolyte 
D)  weak base 
E)  strong acid

Question 7

Which statement about neutralization reactions is FALSE?

Accepted Answer

A)  Neutralization reactions occur between an acid and a base. 
B)  Neutralization reactions are equilibrium reactions. 
C)  Neutralization reactions produce water. 
D)  Neutralization reactions sometimes produce carbon dioxide. 
E)  Neutralization reactions always go to completion. 
A)  Neutralization reactions occur between an acid and a base. 
B)  Neutralization reactions are equilibrium reactions. 
C)  Neutralization reactions produce water. 
D)  Neutralization reactions sometimes produce carbon dioxide. 
E)  Neutralization reactions always go to completion.

Question 8

Which of the following solutions has the highest concentration of [F1F1F1S1F1F1F10OH]?

Accepted Answer

A)  a solution with a pH of 4 
B)  a solution with a pH of 10 
C)  a solution with a [H3O+] of 6.8 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F105 M 
D)  a solution with a [H3O+] of 1 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F1013 M 
E)  a solution with a [HOF1F1F1S1F1F1F10] of 1 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F102 M 
A)  a solution with a pH of 4 
B)  a solution with a pH of 10 
C)  a solution with a [H3O+] of 6.8 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F105 M 
D)  a solution with a [H3O+] of 1 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F1013 M 
E)  a solution with a [HOF1F1F1S1F1F1F10] of 1 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F102 M

Question 9

How do Type I and Type II diabetes differ?

Accepted Answer

A)  Type I only occurs in children, and Type II only occurs in adults. 
B)  Type I is controllable by diet and exercise, and Type II is controlled only through insulin injection. 
C)  Type I can lead to coma and death, and Type II does not have serious effects on the body. 
D)  The pancreas does not produce sufficient insulin in Type I, and there is a lack of insulin receptors with Type II. 
E)  All of the above 
A)  Type I only occurs in children, and Type II only occurs in adults. 
B)  Type I is controllable by diet and exercise, and Type II is controlled only through insulin injection. 
C)  Type I can lead to coma and death, and Type II does not have serious effects on the body. 
D)  The pancreas does not produce sufficient insulin in Type I, and there is a lack of insulin receptors with Type II. 
E)  All of the above

Question 10

The following is the reaction of benzoic acid in water. Which of the following choices is a conjugate acid-base pair in this reaction?

Accepted Answer

A)  benzoic acid and water 
B)  benzoate and hydronium 
C)  benzoic acid and hydronium 
D)  benzoic acid and benzoate 
E)  benzoate and water 
A)  benzoic acid and water 
B)  benzoate and hydronium 
C)  benzoic acid and hydronium 
D)  benzoic acid and benzoate 
E)  benzoate and water

Question 11

In the acid-base reaction between ammonia and water, which of the following statements best describes the concentration of ammonia and ammonium at equilibrium?

Accepted Answer

A)  The concentration of ammonium is increasing. 
B)  There is no ammonium at equilibrium. 
C)  Their concentrations are equal. 
D)  Their concentrations are constant. 
E)  There is no ammonia at equilibrium. 
A)  The concentration of ammonium is increasing. 
B)  There is no ammonium at equilibrium. 
C)  Their concentrations are equal. 
D)  Their concentrations are constant. 
E)  There is no ammonia at equilibrium.

Question 12

Which of the following equations best describes what will happen to formic acid when it reacts with water?

Accepted Answer

A)   
B)   
C)   
D)   
E)   
A)   
B)   
C)   
D)   
E)

Question 13

A buffer solution contains H2CO3 and HCO3F1F1F1S1F1F1F10, resulting in the equilibrium shown by the reaction below. According to this reaction and LeChatelier's principle, what happens when acid (H3O+) is added to this buffer solution?

Accepted Answer

A)  More HCO3F1F1F1S1F1F1F10 is formed. 
B)  More H3O+ is formed. 
C)  More H2CO3 is formed 
D)  Less H2O is formed. 
E)  The reaction shifts to the right. 
A)  More HCO3F1F1F1S1F1F1F10 is formed. 
B)  More H3O+ is formed. 
C)  More H2CO3 is formed 
D)  Less H2O is formed. 
E)  The reaction shifts to the right.

Question 14

What is the pH of a solution with a [H3O+] of 1.0 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F105 M?

Accepted Answer

A)  "9.00" 
B)  "1.0 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F105 M" 
C)  "F1F1F1S1F1F1F105.00" 
D)  "F1F1F1S1F1F1F109.00" 
E)  "5.00" 
A)  "9.00" 
B)  "1.0 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F105 M" 
C)  "F1F1F1S1F1F1F105.00" 
D)  "F1F1F1S1F1F1F109.00" 
E)  "5.00"

Question 15

Which of the following atomic diagrams best represents H+?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Question 16

What does Ka measure?

Accepted Answer

A)  the concentration of water at equilibrium 
B)  the concentration of products divided by reactants at equilibrium 
C)  the concentration of hydronium at equilibrium 
D)  the concentration of hydroxide at equilibrium 
E)  Ka is not a measurement 
A)  the concentration of water at equilibrium 
B)  the concentration of products divided by reactants at equilibrium 
C)  the concentration of hydronium at equilibrium 
D)  the concentration of hydroxide at equilibrium 
E)  Ka is not a measurement

Question 17

Which substance is acting as the acid in the reverse reaction of the acid-base reaction below?

Accepted Answer

A)  ammonia 
B)  water 
C)  ammonium 
D)  hydroxide 
E)  hydronium 
A)  ammonia 
B)  water 
C)  ammonium 
D)  hydroxide 
E)  hydronium

Question 18

According to the Arrhenius definition, which of the following compounds is a base?

Accepted Answer

A)  I and III only 
B)  I, II and IV 
C)  All of these compounds 
D)  III only 
E)  IV only 
A)  I and III only 
B)  I, II and IV 
C)  All of these compounds 
D)  III only 
E)  IV only

Question 19

Acetic acid (CH3COOH) has a pKa of 4.74, while ethanol (CH3CH2OH) has a pKa of about 16. Which molecule is more acidic?

Accepted Answer

A)  acetic acid, because it has a higher pKa 
B)  acetic acid, because it has a lower pKa 
C)  ethanol, because it has a higher pKa 
D)  ethanol, because it has a lower pKa 
E)  They have the same acidity. 
A)  acetic acid, because it has a higher pKa 
B)  acetic acid, because it has a lower pKa 
C)  ethanol, because it has a higher pKa 
D)  ethanol, because it has a lower pKa 
E)  They have the same acidity.

Question 20

Which of the statements describes the following reaction? Mg(OH)2 → Mg2+ + 2 HOF1F1F1S1F1F1F10

Accepted Answer

A)  This reaction is the dissociation of a strong acid. 
B)  This reaction is the dissociation of a weak acid. 
C)  This is the reaction of a strong base. 
D)  This is the reaction of a weak base. 
E)  This is not an acid-base reaction. 
A)  This reaction is the dissociation of a strong acid. 
B)  This reaction is the dissociation of a weak acid. 
C)  This is the reaction of a strong base. 
D)  This is the reaction of a weak base. 
E)  This is not an acid-base reaction.

Which of the following is a buffer system?

Which of the following statements best describe a neutralization reaction?

Generally, strong bases are hydroxide salts of

The boxed species in the following reaction is

The pK_a of aspirin is 3.5. What is the K_a of aspirin?

A weak acid is also a _________ because it produces a low concentration of ions in solution.

Which statement about neutralization reactions is FALSE?

Which of the following solutions has the highest concentration of [^OH]?

How do Type I and Type II diabetes differ?

The following is the reaction of benzoic acid in water. Which of the following choices is a conjugate acid-base pair in this reaction?

In the acid-base reaction between ammonia and water, which of the following statements best describes the concentration of ammonia and ammonium at equilibrium?

Which of the following equations best describes what will happen to formic acid when it reacts with water?

A buffer solution contains H₂CO₃ and HCO₃^, resulting in the equilibrium shown by the reaction below. According to this reaction and LeChatelier's principle, what happens when acid (H₃O⁺) is added to this buffer solution?

What is the pH of a solution with a [H₃O⁺] of 1.0  10^⁵ M?

Which of the following atomic diagrams best represents H⁺?

What does K_a measure?

Which substance is acting as the acid in the reverse reaction of the acid-base reaction below?

According to the Arrhenius definition, which of the following compounds is a base?

Acetic acid (CH₃COOH) has a pK_a of 4.74, while ethanol (CH₃CH₂OH) has a pK_a of about 16. Which molecule is more acidic?

Which of the statements describes the following reaction? Mg(OH)₂ → Mg²⁺ + 2 HO^

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Exam 9: Acids and Bases

Which of the following is a buffer system?

Which of the following statements best describe a neutralization reaction?

Generally, strong bases are hydroxide salts of

The boxed species in the following reaction is

The pKa of aspirin is 3.5. What is the Ka of aspirin?

A weak acid is also a _________ because it produces a low concentration of ions in solution.

Which statement about neutralization reactions is FALSE?

Which of the following solutions has the highest concentration of [OH]?

How do Type I and Type II diabetes differ?

The following is the reaction of benzoic acid in water. Which of the following choices is a conjugate acid-base pair in this reaction?

In the acid-base reaction between ammonia and water, which of the following statements best describes the concentration of ammonia and ammonium at equilibrium?

Which of the following equations best describes what will happen to formic acid when it reacts with water?

A buffer solution contains H2CO3 and HCO3, resulting in the equilibrium shown by the reaction below. According to this reaction and LeChatelier's principle, what happens when acid (H3O+) is added to this buffer solution?

What is the pH of a solution with a [H3O+] of 1.0  105 M?

Which of the following atomic diagrams best represents H+?

What does Ka measure?

Which substance is acting as the acid in the reverse reaction of the acid-base reaction below?

According to the Arrhenius definition, which of the following compounds is a base?

Acetic acid (CH3COOH) has a pKa of 4.74, while ethanol (CH3CH2OH) has a pKa of about 16. Which molecule is more acidic?

Which of the statements describes the following reaction? Mg(OH)2 → Mg2+ + 2 HO

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

The pK_a of aspirin is 3.5. What is the K_a of aspirin?

Which of the following solutions has the highest concentration of [^OH]?

A buffer solution contains H₂CO₃ and HCO₃^, resulting in the equilibrium shown by the reaction below. According to this reaction and LeChatelier's principle, what happens when acid (H₃O⁺) is added to this buffer solution?

What is the pH of a solution with a [H₃O⁺] of 1.0  10^⁵ M?

Which of the following atomic diagrams best represents H⁺?

What does K_a measure?

Acetic acid (CH₃COOH) has a pK_a of 4.74, while ethanol (CH₃CH₂OH) has a pK_a of about 16. Which molecule is more acidic?

Which of the statements describes the following reaction? Mg(OH)₂ → Mg²⁺ + 2 HO^