Question 1

Which of the following acids is the strongest? The acid is followed by its Ka value.

Accepted Answer

A)  HF, 3.5 × 10-4 
B)  HCN, 4.9 × 10-10 
C)  HNO2, 4.6 × 10-4 
D)  HCOOH, 1.8 × 10-4 
E)  HClO2, 1.1 × 10-2 
A)  HF, 3.5 × 10-4 
B)  HCN, 4.9 × 10-10 
C)  HNO2, 4.6 × 10-4 
D)  HCOOH, 1.8 × 10-4 
E)  HClO2, 1.1 × 10-2

Question 2

Calculate the pOH of a solution that contains 2.4 × 10-5 M H3O⁺ at 25°C.

Accepted Answer

A)  2.40 
B)  9.38 
C)  4.62 
D)  8.38 
E)  5.62 
A)  2.40 
B)  9.38 
C)  4.62 
D)  8.38 
E)  5.62

Question 3

What is the hydronium ion concentration of a 0.150 M hypochlorous acid solution with Ka = 3.5 × 10-8? The equation for the dissociation of hypochlorous acid is:
HOCl(aq)+ H2O(l)⇌ H3O+(aq)+ OCl-(aq)

Accepted Answer

A)  1.9 × 10-4 M 
B)  7.2 × 10-4 M 
C)  2.8 × 10-5 M 
D)  7.2 × 10-5 M 
A)  1.9 × 10-4 M 
B)  7.2 × 10-4 M 
C)  2.8 × 10-5 M 
D)  7.2 × 10-5 M

Question 4

Match between columns
                        Premises: Lewis base
Lewis acid
Arrhenius acid
Arrhenius base
Brønsted-Lowry acid
Brønsted-Lowry base

Accepted Answer

The Answer of proton acceptor and electron pair donor and is...

Question 5

Which of the following statements is TRUE?

Accepted Answer

A)  A strong acid is composed of a proton and an anion that have a very strong attraction for one another. 
B)  A weak base is composed of a cation and an anion with a very weak attraction between them. 
C)  A strong acid has a strong conjugate base. 
D)  The conjugate base of a very weak acid is stronger than the conjugate base of a strong acid. 
E)  None of the above statements is true. 
A)  A strong acid is composed of a proton and an anion that have a very strong attraction for one another. 
B)  A weak base is composed of a cation and an anion with a very weak attraction between them. 
C)  A strong acid has a strong conjugate base. 
D)  The conjugate base of a very weak acid is stronger than the conjugate base of a strong acid. 
E)  None of the above statements is true.

Question 6

Identify the weak diprotic acid.

Accepted Answer

A)  CH3COOH 
B)  HCl 
C)  H3PO4 
D)  HBrO4 
E)  H2SO3 
A)  CH3COOH 
B)  HCl 
C)  H3PO4 
D)  HBrO4 
E)  H2SO3

Question 7

List the compound in marble that is destroyed by acid rain.

Accepted Answer

A)  NH4OH 
B)  KHHCO3 
C)  CaCO3 
D)  LiOH 
E)  Rb2S 
A)  NH4OH 
B)  KHHCO3 
C)  CaCO3 
D)  LiOH 
E)  Rb2S

Question 8

Calculate the pH of a solution that contains 2.4 × 10-5 M H3O⁺ at 25°C.

Accepted Answer

A)  2.40 
B)  9.38 
C)  4.62 
D)  8.38 
E)  5.62 
A)  2.40 
B)  9.38 
C)  4.62 
D)  8.38 
E)  5.62

Question 9

Determine the pH in a 0.235 M NaOH solution.

Accepted Answer

A)  13.76 
B)  0.24 
C)  13.37 
D)  0.63 
E)  12 
A)  13.76 
B)  0.24 
C)  13.37 
D)  0.63 
E)  12

Question 10

List the major source of energy in the United States.

Accepted Answer

The answer of List the major source of energy in...

Question 11

What is the hydroxide ion concentration of a KOH solution that has a pH of 9.20?

Accepted Answer

A)  6.31 × 10-10 M 
B)  1.58 × 10-5 M 
C)  4.80 M 
D)  9.20 M 
E)  7.20 
A)  6.31 × 10-10 M 
B)  1.58 × 10-5 M 
C)  4.80 M 
D)  9.20 M 
E)  7.20

Question 12

Determine the [OH-] concentration of a 0.123 M Sr(OH)2 solution at 25°C.

Accepted Answer

A)  4.06 × 10-14 M 
B)  0.123 M 
C)  0.246 M 
D)  8.13 × 10-14 M 
E)  0.0615 M 
A)  4.06 × 10-14 M 
B)  0.123 M 
C)  0.246 M 
D)  8.13 × 10-14 M 
E)  0.0615 M

Question 13

What is the autoionization of water?

Accepted Answer

Autoionization of water is the equilibri

Question 14

A solution with a hydroxide ion concentration of 4.15 × 10-6 M is ________ and has a hydrogen ion concentration of ________.

Accepted Answer

A)  acidic, 2.41 × 10-8 M 
B)  acidic, 2.41 × 10-9 M 
C)  basic, 2.41 × 10-8 M 
D)  basic, 2.41 × 10-9 M 
A)  acidic, 2.41 × 10-8 M 
B)  acidic, 2.41 × 10-9 M 
C)  basic, 2.41 × 10-8 M 
D)  basic, 2.41 × 10-9 M

Question 15

Which one of the following,when 1 mole is dissolved in water,produces the solution with the lowest pH?

Accepted Answer

A)  KCl 
B)  LiOH 
C)  CaCl2 
D)  AlCl3 
E)  H2SO4 
A)  KCl 
B)  LiOH 
C)  CaCl2 
D)  AlCl3 
E)  H2SO4

Question 16

Identify the acid that is used in etching glass.

Accepted Answer

A)  citric acid 
B)  hydrochloric acid 
C)  carbonic acid 
D)  hydrofluoric acid 
E)  phosphoric acid 
A)  citric acid 
B)  hydrochloric acid 
C)  carbonic acid 
D)  hydrofluoric acid 
E)  phosphoric acid

Question 17

Determine the [H3O+] concentration for a 0.100 M solution of H2SO4.

Accepted Answer

A)  1.00 × 10-14 M 
B)  5.00 × 10 -14 M 
C)  1.00 × 10-1 M 
D)  2.00 × 10-1 M 
E)  5.00 × 10-2 M 
A)  1.00 × 10-14 M 
B)  5.00 × 10 -14 M 
C)  1.00 × 10-1 M 
D)  2.00 × 10-1 M 
E)  5.00 × 10-2 M

Question 18

Calculate the pOH in an aqueous solution with a pH of 7.85 at 25°C.

Accepted Answer

A)  4.15 
B)  5.15 
C)  6.15 
D)  7.15 
E)  8.15 
A)  4.15 
B)  5.15 
C)  6.15 
D)  7.15 
E)  8.15

Question 19

Calculate the molarity of hydroxide ion in an aqueous solution that has a pOH of 5.00.

Accepted Answer

A)  1.0 × 10-5 
B)  9.00 
C)  1.0 × 10-9 
D)  5.0 × 10-14 
E)  9.0 × 10-14 
A)  1.0 × 10-5 
B)  9.00 
C)  1.0 × 10-9 
D)  5.0 × 10-14 
E)  9.0 × 10-14

Question 20

Which one of the following salts,when dissolved in water,produces the solution with the highest pH?

Accepted Answer

A)  NaHSO3 
B)  NaClO4 
C)  RaO 
D)  Na3PO4 
E)  KF 
A)  NaHSO3 
B)  NaClO4 
C)  RaO 
D)  Na3PO4 
E)  KF

Exam 16: Acids and Bases

Which of the following acids is the strongest? The acid is followed by its Ka value.

Calculate the pOH of a solution that contains 2.4 × 10-5 M H3O⁺ at 25°C.

What is the hydronium ion concentration of a 0.150 M hypochlorous acid solution with Ka = 3.5 × 10-8? The equation for the dissociation of hypochlorous acid is: HOCl(aq)+ H2O(l)⇌ H3O+(aq)+ OCl-(aq)

Which of the following statements is TRUE?

Identify the weak diprotic acid.

List the compound in marble that is destroyed by acid rain.

Calculate the pH of a solution that contains 2.4 × 10-5 M H3O⁺ at 25°C.

Determine the pH in a 0.235 M NaOH solution.

List the major source of energy in the United States.

What is the hydroxide ion concentration of a KOH solution that has a pH of 9.20?

Determine the [OH-] concentration of a 0.123 M Sr(OH)2 solution at 25°C.

What is the autoionization of water?

A solution with a hydroxide ion concentration of 4.15 × 10-6 M is ________ and has a hydrogen ion concentration of ________.

Which one of the following,when 1 mole is dissolved in water,produces the solution with the lowest pH?

Identify the acid that is used in etching glass.

Determine the [H3O+] concentration for a 0.100 M solution of H2SO4.

Calculate the pOH in an aqueous solution with a pH of 7.85 at 25°C.

Calculate the molarity of hydroxide ion in an aqueous solution that has a pOH of 5.00.

Which one of the following salts,when dissolved in water,produces the solution with the highest pH?

Matter, measurement, and Problem Solving

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Which of the following acids is the strongest? The acid is followed by its K_a value.

Calculate the pOH of a solution that contains 2.4 × 10^-⁵ M H₃O⁺ at 25°C.

What is the hydronium ion concentration of a 0.150 M hypochlorous acid solution with K_a = 3.5 × 10^-⁸? The equation for the dissociation of hypochlorous acid is: HOCl(aq)+ H₂O(l)⇌ H₃O⁺(aq)+ OCl^-(aq)

Calculate the pH of a solution that contains 2.4 × 10^-⁵ M H₃O⁺ at 25°C.

Determine the [OH^-] concentration of a 0.123 M Sr(OH)₂ solution at 25°C.

A solution with a hydroxide ion concentration of 4.15 × 10^-6 M is and has a hydrogen ion concentration of .

Determine the [H₃O⁺] concentration for a 0.100 M solution of H₂SO₄.