Question 1

The Ka for hydrofluoric acid is 6.9 × 10−4.What is Kb for fluoride ion?

Accepted Answer

A)  1.0 × 10−14 
B)  1.4 × 10−11 
C)  7.4 × 10−9 
D)  1.0 × 10−7 
E)  6.9 × 1010 
A)  1.0 × 10−14 
B)  1.4 × 10−11 
C)  7.4 × 10−9 
D)  1.0 × 10−7 
E)  6.9 × 1010

Question 2

If the H+ concentration is less than 1.0 × 10−7 M,the solution is

Accepted Answer

A)  basic. 
B)  acidic. 
C)  neutral. 
D)  amphiprotic. 
E)  in equilibrium. 
A)  basic. 
B)  acidic. 
C)  neutral. 
D)  amphiprotic. 
E)  in equilibrium.

Question 3

Which of the following equilibrium constant expressions represents the ionization of water?

Accepted Answer

A)  $K_{W}=\left[\mathrm{H}^{+}\right]\left[\mathrm{OH}^{-}\right]$ 
B)  $K_{\mathrm{W}}=\frac{\left[\mathrm{H}^{+}\right]}{\left[\mathrm{OH}^{-}\right]}$ 
C)  $K_{w}=\frac{\left[\mathrm{OH}^{-}\right]}{\left[\mathrm{H}^{+}\right]}$ 
D)  KW = ?log[H+] 
E)  KW = ?log[OH?] 
A)  $K_{W}=\left[\mathrm{H}^{+}\right]\left[\mathrm{OH}^{-}\right]$ 
B)  $K_{\mathrm{W}}=\frac{\left[\mathrm{H}^{+}\right]}{\left[\mathrm{OH}^{-}\right]}$ 
C)  $K_{w}=\frac{\left[\mathrm{OH}^{-}\right]}{\left[\mathrm{H}^{+}\right]}$ 
D)  KW = ?log[H+] 
E)  KW = ?log[OH?]

Question 4

All of the following species are strong acids EXCEPT

Accepted Answer

A)  HClO4. 
B)  HBr. 
C)  H2SO4. 
D)  HF. 
E)  HI. 
A)  HClO4. 
B)  HBr. 
C)  H2SO4. 
D)  HF. 
E)  HI.

Question 5

Which of the following chemical reactions corresponds to the generic form of the base dissociation constant (Kb)?

Accepted Answer

A)  HB(aq)+ OH?(aq)  ? B?(aq)+ H2O(l) 
B)  2H2O(l)  ? H3O+(aq)+ OH?(aq) 
C)  HB(aq)+ H2O(l)  ? B?(aq)+ H3O+(aq) 
D)  B?(aq)+ H2O(l)  ? HB(aq)+ OH?(aq) 
E)  B?(aq)+ H3O+(aq)  ? HB(aq)+ H2O(l) 
A)  HB(aq)+ OH?(aq)  ? B?(aq)+ H2O(l) 
B)  2H2O(l)  ? H3O+(aq)+ OH?(aq) 
C)  HB(aq)+ H2O(l)  ? B?(aq)+ H3O+(aq) 
D)  B?(aq)+ H2O(l)  ? HB(aq)+ OH?(aq) 
E)  B?(aq)+ H3O+(aq)  ? HB(aq)+ H2O(l)

Question 6

Which of the following species is a weak base?

Accepted Answer

A)  KOH 
B)  NH4+ 
C)  HF 
D)  H3PO4 
E)  CH3CO2− 
A)  KOH 
B)  NH4+ 
C)  HF 
D)  H3PO4 
E)  CH3CO2−

Question 7

If the H+ concentration in a carbonated beverage is 4.7 × 10−5 M,what is the OH− concentration? (Kw = 1.0 × 10−14)

Accepted Answer

A)  4.7 × 10−19 M 
B)  2.1 × 10−10 M 
C)  5.3 × 10−5 M 
D)  2.1 × 104 M 
E)  4.7 × 109 M 
A)  4.7 × 10−19 M 
B)  2.1 × 10−10 M 
C)  5.3 × 10−5 M 
D)  2.1 × 104 M 
E)  4.7 × 109 M

Question 8

The hydronium ion concentration in a sample of lemon juice is 3.2 × 10−3 M.What is the pH of the lemon juice?

Accepted Answer

A)  1.06 
B)  2.01 
C)  2.49 
D)  5.21 
E)  11.72 
A)  1.06 
B)  2.01 
C)  2.49 
D)  5.21 
E)  11.72

Question 9

A salt solution can be acidic,basic,or neutral.When dissolved in water,which of the following salts will make the solution basic: KBr,MgCO3,NaF,Na2SO4,and CrCl3?

Accepted Answer

A)  MgCO3 and CrCl3 
B)  KBr and Na2SO4 
C)  KBr,MgCO3,and CrCl3 
D)  MgCO3,NaF,and Na2SO4 
E)  NaF,Na2SO4,and CrCl3 
A)  MgCO3 and CrCl3 
B)  KBr and Na2SO4 
C)  KBr,MgCO3,and CrCl3 
D)  MgCO3,NaF,and Na2SO4 
E)  NaF,Na2SO4,and CrCl3

Question 10

All carboxylic acids contain the organic group(s)______ .

Accepted Answer

A)  −CH3 
B)  −NH2 
C)  −OH 
D)  −COOH 
E)  both −NH2 and −COOH 
A)  −CH3 
B)  −NH2 
C)  −OH 
D)  −COOH 
E)  both −NH2 and −COOH

Question 11

Which of the following chemical equations corresponds to the base ionization constant,Kb,for hydrogen sulfite ion (HSO3-)?

Accepted Answer

A)  HSO3-(aq)+ H2SO3(aq) $ \rightleftharpoons $ 2 H2SO3(aq) 
B)  HSO3-(aq)+ H2O(l) $ \rightleftharpoons $SO32-(aq)+ H3O+(aq) 
C)  HSO3-(aq)+ OH-(aq) $ \rightleftharpoons $SO32-(aq)+ H2O(l) 
D)  HSO3-(aq)+ H3O+(aq)  ? H2SO3(aq)+ H2O(l) 
E)  HSO3-(aq)+ H2O(l)  ? H2SO3(aq)+ OH-(aq) 
A)  HSO3-(aq)+ H2SO3(aq) $ \rightleftharpoons $ 2 H2SO3(aq) 
B)  HSO3-(aq)+ H2O(l) $ \rightleftharpoons $SO32-(aq)+ H3O+(aq) 
C)  HSO3-(aq)+ OH-(aq) $ \rightleftharpoons $SO32-(aq)+ H2O(l) 
D)  HSO3-(aq)+ H3O+(aq)  ? H2SO3(aq)+ H2O(l) 
E)  HSO3-(aq)+ H2O(l)  ? H2SO3(aq)+ OH-(aq)

Question 12

Which of the following chemical equations corresponds to Kb1 for SO32-?

Accepted Answer

A)  HSO3-(aq)+ H2O(l)  ? H2SO3(aq)+ OH-(aq) 
B)  SO32-(aq)+ H3O+(aq)  ? HSO3-(aq)+ H2O(l) 
C)  H2SO3(aq)+ OH-(aq)  ? HSO3-(aq)+ H2O(l) 
D)  HSO3-(aq)+ OH-(aq)  ? SO32-(aq)+ H2O(l) 
E)  SO32-(aq)+ H2O(l)  ? HSO3-(aq)+ OH-(aq) 
A)  HSO3-(aq)+ H2O(l)  ? H2SO3(aq)+ OH-(aq) 
B)  SO32-(aq)+ H3O+(aq)  ? HSO3-(aq)+ H2O(l) 
C)  H2SO3(aq)+ OH-(aq)  ? HSO3-(aq)+ H2O(l) 
D)  HSO3-(aq)+ OH-(aq)  ? SO32-(aq)+ H2O(l) 
E)  SO32-(aq)+ H2O(l)  ? HSO3-(aq)+ OH-(aq)

Question 13

The acid equilibrium constant (Ka)for ammonium chloride refers to which of the following chemical reactions?

Accepted Answer

A)  NH4+(aq)+ H3O+(aq)  ? NH52+(aq)+ H2O(l) 
B)  NH4+(aq)+ H2O(l)  ? NH3(aq)+ H3O+(aq) 
C)  NH4+(aq)+ OH?(aq)  ? NH3(aq)+ H2O(l) 
D)  NH3(aq)+ H2O(l)  ? NH4+(aq)+ OH?(aq) 
E)  NH3(aq)+ H3O+(aq)  ? NH4+(aq)+ H2O(l) 
A)  NH4+(aq)+ H3O+(aq)  ? NH52+(aq)+ H2O(l) 
B)  NH4+(aq)+ H2O(l)  ? NH3(aq)+ H3O+(aq) 
C)  NH4+(aq)+ OH?(aq)  ? NH3(aq)+ H2O(l) 
D)  NH3(aq)+ H2O(l)  ? NH4+(aq)+ OH?(aq) 
E)  NH3(aq)+ H3O+(aq)  ? NH4+(aq)+ H2O(l)

Question 14

The pH of aqueous 0.10 M pyridine (C5H5N)ion is 9.09.What is the Kb of this base?

Accepted Answer

A)  8.0 × 10-10 
B)  1.5 × 10-9 
C)  9.0 × 10-6 
D)  1.6 × 10-5 
E)  1.2 × 10-5 
A)  8.0 × 10-10 
B)  1.5 × 10-9 
C)  9.0 × 10-6 
D)  1.6 × 10-5 
E)  1.2 × 10-5

Question 15

What is the H3O+ concentration of an aqueous solution with a pH of 8.77?

Accepted Answer

A)  1.7 × 10-9 M 
B)  5.9 × 10-6 M 
C)  1.6 × 10-4 M 
D)  5.23 M 
E)  5.9 × 108 M 
A)  1.7 × 10-9 M 
B)  5.9 × 10-6 M 
C)  1.6 × 10-4 M 
D)  5.23 M 
E)  5.9 × 108 M

Question 16

What is the pH of 0.25 M aqueous acetate ion? (Kb of CH3CO2- = 5.6 × 10-10)

Accepted Answer

A)  4.32 
B)  4.93 
C)  9.07 
D)  9.68 
E)  13.40 
A)  4.32 
B)  4.93 
C)  9.07 
D)  9.68 
E)  13.40

Question 17

Which of the following chemical reactions represents the ionization of water?

Accepted Answer

A)  2H2O(l)  ? 2H2(g)+ O2(g) 
B)  H2O(l)  ? H2O?(aq) 
C)  H2O(l)  ? H2O+(aq)+ e? 
D)  H2O(l)  ? H+(aq)+ OH?(aq) 
E)  H+(aq)+ OH?(aq)  ? H2O(l) 
A)  2H2O(l)  ? 2H2(g)+ O2(g) 
B)  H2O(l)  ? H2O?(aq) 
C)  H2O(l)  ? H2O+(aq)+ e? 
D)  H2O(l)  ? H+(aq)+ OH?(aq) 
E)  H+(aq)+ OH?(aq)  ? H2O(l)

The K_a for hydrofluoric acid is 6.9 × 10−⁴.What is K_b for fluoride ion?

If the H⁺ concentration is less than 1.0 × 10−⁷ M,the solution is

Which of the following equilibrium constant expressions represents the ionization of water?

All of the following species are strong acids EXCEPT

Which of the following chemical reactions corresponds to the generic form of the base dissociation constant (K_b)?

Which of the following species is a weak base?

If the H⁺ concentration in a carbonated beverage is 4.7 × 10−⁵ M,what is the OH− concentration? (K_w = 1.0 × 10−¹⁴)

The hydronium ion concentration in a sample of lemon juice is 3.2 × 10−³ M.What is the pH of the lemon juice?

A salt solution can be acidic,basic,or neutral.When dissolved in water,which of the following salts will make the solution basic: KBr,MgCO₃,NaF,Na₂SO₄,and CrCl₃?

All carboxylic acids contain the organic group(s)______ .

Which of the following chemical equations corresponds to the base ionization constant,K_b,for hydrogen sulfite ion (HSO₃^-)?

Which of the following chemical equations corresponds to K_b1 for SO₃^2-?

The acid equilibrium constant (K_a)for ammonium chloride refers to which of the following chemical reactions?

The pH of aqueous 0.10 M pyridine (C₅H₅N)ion is 9.09.What is the K_b of this base?

What is the H₃O⁺ concentration of an aqueous solution with a pH of 8.77?

What is the pH of 0.25 M aqueous acetate ion? (K_b of CH₃CO₂^- = 5.6 × 10^-10)

Which of the following chemical reactions represents the ionization of water?

Matter and Measurements

Atoms, molecules, and Ions

Mass Relations in Chemistry;stoichiometry

Reactions in Aqueous Solution

Gases

Electronic Structure and the Periodic Table

Covalent Bonding

Thermochemistry

Liquids and Solids

Solutions

Rate of Reaction

Gaseous Chemical Equilibrium

Equilibria in Acid-Base Solutions

Complex Ion and Precipitation Equilibria

Spontaneity of Reaction

Electrochemistry

Nuclear Reactions

Complex Ions

Chemistry of the Metals

Chemistry of the Nonmetals

Organic Chemistry

Organic Polymers, natural and Synthetic

Filters

Exam 13: Acids and Bases

The Ka for hydrofluoric acid is 6.9 × 10−4.What is Kb for fluoride ion?

If the H+ concentration is less than 1.0 × 10−7 M,the solution is

Which of the following equilibrium constant expressions represents the ionization of water?

All of the following species are strong acids EXCEPT

Which of the following chemical reactions corresponds to the generic form of the base dissociation constant (Kb)?

Which of the following species is a weak base?

If the H+ concentration in a carbonated beverage is 4.7 × 10−5 M,what is the OH− concentration? (Kw = 1.0 × 10−14)

The hydronium ion concentration in a sample of lemon juice is 3.2 × 10−3 M.What is the pH of the lemon juice?

A salt solution can be acidic,basic,or neutral.When dissolved in water,which of the following salts will make the solution basic: KBr,MgCO3,NaF,Na2SO4,and CrCl3?

All carboxylic acids contain the organic group(s)______ .

Which of the following chemical equations corresponds to the base ionization constant,Kb,for hydrogen sulfite ion (HSO3-)?

Which of the following chemical equations corresponds to Kb1 for SO32-?

The acid equilibrium constant (Ka)for ammonium chloride refers to which of the following chemical reactions?

The pH of aqueous 0.10 M pyridine (C5H5N)ion is 9.09.What is the Kb of this base?

What is the H3O+ concentration of an aqueous solution with a pH of 8.77?

What is the pH of 0.25 M aqueous acetate ion? (Kb of CH3CO2- = 5.6 × 10-10)

Which of the following chemical reactions represents the ionization of water?

Matter and Measurements

Atoms, molecules, and Ions

Mass Relations in Chemistry;stoichiometry

Reactions in Aqueous Solution

Gases

Electronic Structure and the Periodic Table

Covalent Bonding

Thermochemistry

Liquids and Solids

Solutions

Rate of Reaction

Gaseous Chemical Equilibrium

Equilibria in Acid-Base Solutions

Complex Ion and Precipitation Equilibria

Spontaneity of Reaction

Electrochemistry

Nuclear Reactions

Complex Ions

Chemistry of the Metals

Chemistry of the Nonmetals

Organic Chemistry

Organic Polymers, natural and Synthetic

Filters

The K_a for hydrofluoric acid is 6.9 × 10−⁴.What is K_b for fluoride ion?

If the H⁺ concentration is less than 1.0 × 10−⁷ M,the solution is

Which of the following chemical reactions corresponds to the generic form of the base dissociation constant (K_b)?

If the H⁺ concentration in a carbonated beverage is 4.7 × 10−⁵ M,what is the OH− concentration? (K_w = 1.0 × 10−¹⁴)

The hydronium ion concentration in a sample of lemon juice is 3.2 × 10−³ M.What is the pH of the lemon juice?

A salt solution can be acidic,basic,or neutral.When dissolved in water,which of the following salts will make the solution basic: KBr,MgCO₃,NaF,Na₂SO₄,and CrCl₃?

Which of the following chemical equations corresponds to the base ionization constant,K_b,for hydrogen sulfite ion (HSO₃^-)?

Which of the following chemical equations corresponds to K_b1 for SO₃^2-?

The acid equilibrium constant (K_a)for ammonium chloride refers to which of the following chemical reactions?

The pH of aqueous 0.10 M pyridine (C₅H₅N)ion is 9.09.What is the K_b of this base?

What is the H₃O⁺ concentration of an aqueous solution with a pH of 8.77?

What is the pH of 0.25 M aqueous acetate ion? (K_b of CH₃CO₂^- = 5.6 × 10^-10)