Question 1

Which molecule is amphoteric?

Accepted Answer

A)  CH3NH2 
B)  CH3OH 
C)  CH3COOH 
D)  H2SO4 
E)  NaOH 
A)  CH3NH2 
B)  CH3OH 
C)  CH3COOH 
D)  H2SO4 
E)  NaOH

Question 2

If the concentration of hydronium ion in water is 1 × 10-12 M, the concentration of hydroxide ion is _____ and there is more _____ in the solution.

Accepted Answer

A)  1 × 10-2 M; hydroxide 
B)  1 × 10-2 M; hydronium 
C)  1 × 1012 M; hydroxide 
D)  1 × 1012 M; hydronium 
A)  1 × 10-2 M; hydroxide 
B)  1 × 10-2 M; hydronium 
C)  1 × 1012 M; hydroxide 
D)  1 × 1012 M; hydronium

Question 3

Which reaction BEST illustrates the reaction of an acid in aqueous solution?

Accepted Answer

A)  HCl + H2O → Cl- + H3O+ 
B)  NH3 + H2O → +NH4 + H3O+ 
C)  HCl + H2O → HCl + H3O+ 
D)  NH3 + H2O → +NH4 + HO- 
E)  HCl + H2O → Cl- + HO- 
A)  HCl + H2O → Cl- + H3O+ 
B)  NH3 + H2O → +NH4 + H3O+ 
C)  HCl + H2O → HCl + H3O+ 
D)  NH3 + H2O → +NH4 + HO- 
E)  HCl + H2O → Cl- + HO-

Question 4

The boxed species in the following reaction is

Accepted Answer

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

Question 5

Which solution has the highest concentration of [OH-]?

Accepted Answer

A)  a solution with a [H3O+] of 1 × 10-5 M 
B)  a solution with a [H3O+] of 1 × 10-13 M 
C)  a solution with a [OH-] of 1 × 10-5 M 
D)  a solution with a [OH-] of 1 × 10-13 M 
E)  a solution with a [OH-] of 1 × 10-2 M 
A)  a solution with a [H3O+] of 1 × 10-5 M 
B)  a solution with a [H3O+] of 1 × 10-13 M 
C)  a solution with a [OH-] of 1 × 10-5 M 
D)  a solution with a [OH-] of 1 × 10-13 M 
E)  a solution with a [OH-] of 1 × 10-2 M

Question 6

Which would be the BEST treatment of metabolic acidosis?

Accepted Answer

A)  the IV administration of an acid 
B)  the IV administration of a weak base 
C)  breathing into a paper bag 
D)  the IV administration of HCl 
E)  reducing breathing rate 
A)  the IV administration of an acid 
B)  the IV administration of a weak base 
C)  breathing into a paper bag 
D)  the IV administration of HCl 
E)  reducing breathing rate

Question 7

What is the pH of a solution with a [OH- ] of 1.0 × 10-10 M?

Accepted Answer

A)  1.0 × 10-10 
B)  10.0 
C)  4.00 
D)  -10.0 
E)  -4.00 
A)  1.0 × 10-10 
B)  10.0 
C)  4.00 
D)  -10.0 
E)  -4.00

Question 8

The concentration of H3O+ in a solution is 1 × 10-4 M.Which statement describes how the concentration of OH- in the solution could be determined?

Accepted Answer

A)  It is not possible to determine [OH-]. 
B)  Calculate pH. 
C)  Measure the pH with a pH probe or dipstick. 
D)  Solve for [OH-] using the ion-product constant equation. 
E)  The [OH-] is unchanged when an acid is added to a solution. 
A)  It is not possible to determine [OH-]. 
B)  Calculate pH. 
C)  Measure the pH with a pH probe or dipstick. 
D)  Solve for [OH-] using the ion-product constant equation. 
E)  The [OH-] is unchanged when an acid is added to a solution.

Question 9

What mole ratio of NaOH to H2SO4 is needed in a neutralization reaction?

Accepted Answer

A)  1:1 
B)  1:2 
C)  1:3 
D)  2:1 
E)  3:1 
A)  1:1 
B)  1:2 
C)  1:3 
D)  2:1 
E)  3:1

Question 10

The following figure illustrates the action of a HF and F- buffer where the sizes of the boxes are proportional to the concentrations of HF and F- in solution.What will happen when a small amount of base (OH-)is added to the HF/F- buffer?

Accepted Answer

A)  The concentration of OH- will increase. 
B)  The concentration of H3O+ will increase. 
C)  The concentration of HF will increase. 
D)  The concentration of F- will increase. 
E)  The pH of the solution will increase. 
A)  The concentration of OH- will increase. 
B)  The concentration of H3O+ will increase. 
C)  The concentration of HF will increase. 
D)  The concentration of F- will increase. 
E)  The pH of the solution will increase.

Question 11

Which statement BEST describes the following reaction?

Accepted Answer

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

Question 12

The boxed species in the following reaction is

Accepted Answer

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

Question 13

Which pH range is referred to as physiological pH?

Accepted Answer

A)  6-8 
B)  7.35-7.45 
C)  6.7-6.8 
D)  6.5-7.5 
E)  5-8 
A)  6-8 
B)  7.35-7.45 
C)  6.7-6.8 
D)  6.5-7.5 
E)  5-8

Question 14

Consider a buffer solution containing CH3COO-Na+ and CH3COOH.If you add hydronium (H3O+)until all of the CH3COO- is converted into CH3COOH and then add a little more hydronium, what do you expect to observe?

Accepted Answer

A)  The pH increases. 
B)  The pH decreases. 
C)  The pH stays the same. 
D)  The solution will be neutralized. 
E)  The pH changes, but it is not possible to determine how it will change. 
A)  The pH increases. 
B)  The pH decreases. 
C)  The pH stays the same. 
D)  The solution will be neutralized. 
E)  The pH changes, but it is not possible to determine how it will change.

Question 15

Which of the following reactions illustrate the reaction of a base? I.NH3 + H2O → NH4+ + OH-
II)HCl + H2O → H3O+ + Cl-
III)NaOH → Na+ + OH-
IV)NH4+ + H2O → H3O+ + NH3

Accepted Answer

A)  I only 
B)  II only 
C)  I and III 
D)  I, III, and IV 
E)  All of the above are reactions of a base. 
A)  I only 
B)  II only 
C)  I and III 
D)  I, III, and IV 
E)  All of the above are reactions of a base.

Question 16

What is the pH of a solution with a [H3O+] of 7.9 × 10-11 M?

Accepted Answer

A)  10.1 
B)  -10.1 
C)  3.90 
D)  -3.90 
E)  11.9 
A)  10.1 
B)  -10.1 
C)  3.90 
D)  -3.90 
E)  11.9

Question 17

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 18

Which acid is NOT a strong acid?

Accepted Answer

A)  HCl 
B)  HI 
C)  HNO3 
D)  CH3COOH 
E)  H2SO4 
A)  HCl 
B)  HI 
C)  HNO3 
D)  CH3COOH 
E)  H2SO4

Question 19

The neutralization reaction of potassium hydrogen carbonate (KHCO3)and HI produces what gas?

Accepted Answer

A)  CO2 
B)  O2 
C)  H2CO3 
D)  H2O 
E)  H+ 
A)  CO2 
B)  O2 
C)  H2CO3 
D)  H2O 
E)  H+

Question 20

Which statement BEST describes what it means for the acid-base reaction between acetic acid and water to be in equilibrium? CH3COOH + H2O ⇌ CH3COO- + H3O+

Accepted Answer

A)  The mass of acetic acid and acetate is equal. 
B)  The number of moles of acetate equals the number of moles of acetic acid. 
C)  The number of moles of hydronium equals the number of moles of water. 
D)  The forward and reverse reactions proceed at the same rate. 
E)  The reaction is balanced. 
A)  The mass of acetic acid and acetate is equal. 
B)  The number of moles of acetate equals the number of moles of acetic acid. 
C)  The number of moles of hydronium equals the number of moles of water. 
D)  The forward and reverse reactions proceed at the same rate. 
E)  The reaction is balanced.

Which molecule is amphoteric?

If the concentration of hydronium ion in water is 1 × 10^-12 M, the concentration of hydroxide ion is _ and there is more _ in the solution.

Which reaction BEST illustrates the reaction of an acid in aqueous solution?

The boxed species in the following reaction is

Which solution has the highest concentration of [OH^-]?

Which would be the BEST treatment of metabolic acidosis?

What is the pH of a solution with a [OH^- ] of 1.0 × 10^-10 M?

The concentration of H₃O⁺ in a solution is 1 × 10^-4 M.Which statement describes how the concentration of OH^- in the solution could be determined?

What mole ratio of NaOH to H₂SO₄ is needed in a neutralization reaction?

The following figure illustrates the action of a HF and F^- buffer where the sizes of the boxes are proportional to the concentrations of HF and F^- in solution.What will happen when a small amount of base (OH^-)is added to the HF/F^- buffer?

Which statement BEST describes the following reaction?

The boxed species in the following reaction is

Which pH range is referred to as physiological pH?

Consider a buffer solution containing CH₃COO^-Na⁺ and CH₃COOH.If you add hydronium (H₃O⁺)until all of the CH₃COO^- is converted into CH₃COOH and then add a little more hydronium, what do you expect to observe?

Which of the following reactions illustrate the reaction of a base? I.NH₃ + H₂O → NH₄⁺ + OH^- II)HCl + H₂O → H₃O⁺ + Cl^- III)NaOH → Na⁺ + OH^- IV)NH₄⁺ + H₂O → H₃O⁺ + NH₃

What is the pH of a solution with a [H₃O⁺] of 7.9 × 10^-11 M?

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

Which acid is NOT a strong acid?

The neutralization reaction of potassium hydrogen carbonate (KHCO₃)and HI produces what gas?

Which statement BEST describes what it means for the acid-base reaction between acetic acid and water to be in equilibrium? CH₃COOH + H₂O ⇌ CH₃COO^- + H₃O⁺

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions 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, Ph, and Buffers

Which molecule is amphoteric?

If the concentration of hydronium ion in water is 1 × 10-12 M, the concentration of hydroxide ion is _____ and there is more _____ in the solution.

Which reaction BEST illustrates the reaction of an acid in aqueous solution?

The boxed species in the following reaction is

Which solution has the highest concentration of [OH-]?

Which would be the BEST treatment of metabolic acidosis?

What is the pH of a solution with a [OH- ] of 1.0 × 10-10 M?

The concentration of H3O+ in a solution is 1 × 10-4 M.Which statement describes how the concentration of OH- in the solution could be determined?

What mole ratio of NaOH to H2SO4 is needed in a neutralization reaction?

The following figure illustrates the action of a HF and F- buffer where the sizes of the boxes are proportional to the concentrations of HF and F- in solution.What will happen when a small amount of base (OH-)is added to the HF/F- buffer?

Which statement BEST describes the following reaction?

The boxed species in the following reaction is

Which pH range is referred to as physiological pH?

Consider a buffer solution containing CH3COO-Na+ and CH3COOH.If you add hydronium (H3O+)until all of the CH3COO- is converted into CH3COOH and then add a little more hydronium, what do you expect to observe?

Which of the following reactions illustrate the reaction of a base? I.NH3 + H2O → NH4+ + OH- II)HCl + H2O → H3O+ + Cl- III)NaOH → Na+ + OH- IV)NH4+ + H2O → H3O+ + NH3

What is the pH of a solution with a [H3O+] of 7.9 × 10-11 M?

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

Which acid is NOT a strong acid?

The neutralization reaction of potassium hydrogen carbonate (KHCO3)and HI produces what gas?

Which statement BEST describes what it means for the acid-base reaction between acetic acid and water to be in equilibrium? CH3COOH + H2O ⇌ CH3COO- + H3O+

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

If the concentration of hydronium ion in water is 1 × 10^-12 M, the concentration of hydroxide ion is _ and there is more _ in the solution.

Which solution has the highest concentration of [OH^-]?

What is the pH of a solution with a [OH^- ] of 1.0 × 10^-10 M?

The concentration of H₃O⁺ in a solution is 1 × 10^-4 M.Which statement describes how the concentration of OH^- in the solution could be determined?

What mole ratio of NaOH to H₂SO₄ is needed in a neutralization reaction?

The following figure illustrates the action of a HF and F^- buffer where the sizes of the boxes are proportional to the concentrations of HF and F^- in solution.What will happen when a small amount of base (OH^-)is added to the HF/F^- buffer?

Consider a buffer solution containing CH₃COO^-Na⁺ and CH₃COOH.If you add hydronium (H₃O⁺)until all of the CH₃COO^- is converted into CH₃COOH and then add a little more hydronium, what do you expect to observe?

Which of the following reactions illustrate the reaction of a base? I.NH₃ + H₂O → NH₄⁺ + OH^- II)HCl + H₂O → H₃O⁺ + Cl^- III)NaOH → Na⁺ + OH^- IV)NH₄⁺ + H₂O → H₃O⁺ + NH₃

What is the pH of a solution with a [H₃O⁺] of 7.9 × 10^-11 M?

The neutralization reaction of potassium hydrogen carbonate (KHCO₃)and HI produces what gas?

Which statement BEST describes what it means for the acid-base reaction between acetic acid and water to be in equilibrium? CH₃COOH + H₂O ⇌ CH₃COO^- + H₃O⁺