Question 1

Which of the following ions is a weak acid

Accepted Answer

A)  SO42- 
B)  H2SO4 
C)  HSO4- 
D)  HNO3 
E)  NO3- 
A)  SO42- 
B)  H2SO4 
C)  HSO4- 
D)  HNO3 
E)  NO3- C

Question 2

Identify the major ionic species present in an aqueous solution of K2SO4.

Accepted Answer

A)  K2+, S6+, O48- 
B)  K2+, S6+, 4O2- 
C)  2K+, S6+, O48- 
D)  2K+, S6+, 4O2- 
E)  2K+, SO42- 
A)  K2+, S6+, O48- 
B)  K2+, S6+, 4O2- 
C)  2K+, S6+, O48- 
D)  2K+, S6+, 4O2- 
E)  2K+, SO42- E

Question 3

34.62 mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution. What is the concentration of the original sulfuric acid solution

Accepted Answer

A)  0.0229 M 
B)  0.218 M 
C)  0.0523 M 
D)  0.209 M 
E)  0.105 M 
A)  0.0229 M 
B)  0.218 M 
C)  0.0523 M 
D)  0.209 M 
E)  0.105 M C

Question 4

Shown here is the balanced molecular equation for the reaction that would occur between CuCl2(aq) and Pb(s). Which of the following, if any, shows the correctly balanced net ionic equation
Molecular equation: CuCl2(aq) + Pb(s) $\rarr$ Cu(s) + PbCl2(s)

Accepted Answer

A)  Net ionic equation: Cu2+(aq) + 2Cl-(aq) + Pb(s) $\rarr$ Cu(s) + Pb2+ (aq) + 2 Cl-(aq) 
B)  Net ionic equation: 2Cu2+(aq) + 2Cl-(aq) + Pb(s) $\rarr$ 2Cu(s) + PbCl2(s) 
C) Net ionic equation: Cu2+(aq) + Pb(s) $\rarr$ Cu(s) + Pb2+(aq) 
D)  Net ionic equation: Cu2+(aq) + 2Cl-(aq) + Pb(s) $\rarr$ Cu(s) + PbCl2(s) 
E)  None of the above 
A)  Net ionic equation: Cu2+(aq) + 2Cl-(aq) + Pb(s) $\rarr$ Cu(s) + Pb2+ (aq) + 2 Cl-(aq) 
B)  Net ionic equation: 2Cu2+(aq) + 2Cl-(aq) + Pb(s) $\rarr$ 2Cu(s) + PbCl2(s) 
C) Net ionic equation: Cu2+(aq) + Pb(s) $\rarr$ Cu(s) + Pb2+(aq) 
D)  Net ionic equation: Cu2+(aq) + 2Cl-(aq) + Pb(s) $\rarr$ Cu(s) + PbCl2(s) 
E)  None of the above

Question 5

Predict the products of the following single replacement reaction.
Fe(s) + CuSO4(aq) $\rarr$

Accepted Answer

A)  Cu(s) + FeSO4(aq) 
B)  Fe(s) + Cu(s) + SO4(aq) 
C)  CuS(s) + Fe2SO4(aq) 
D)  FeCuSO4(aq) 
E)  FeO(s) + CuSO3(aq) 
A)  Cu(s) + FeSO4(aq) 
B)  Fe(s) + Cu(s) + SO4(aq) 
C)  CuS(s) + Fe2SO4(aq) 
D)  FeCuSO4(aq) 
E)  FeO(s) + CuSO3(aq)

Question 6

Categorize the following reaction as an acid-base neutralization, precipitation, combination, decomposition, combustion, displacement, or disproportionation reaction.2KClO3(s) $\rarr$ 2KCl(s) + 3O2(g)

Accepted Answer

A)  Acid-Base Neutralization 
B)  Combination 
C)  Decomposition 
D)  Combustion 
E)  Displacement 
A)  Acid-Base Neutralization 
B)  Combination 
C)  Decomposition 
D)  Combustion 
E)  Displacement

Question 7

What is the molarity of a solution that contains 5.0 moles of solute in 2.00 liters of solution

Accepted Answer

A)  1.5 
B)  2.5 
C)  3.5 
D)  4.4 
E)  None of the above 
A)  1.5 
B)  2.5 
C)  3.5 
D)  4.4 
E)  None of the above

Question 8

For which one of the following acids is chlorine in the +5 oxidation state

Accepted Answer

A)  HCl 
B)  HClO 
C)  HClO2 
D)  HClO3 
E)  HClO4 
A)  HCl 
B)  HClO 
C)  HClO2 
D)  HClO3 
E)  HClO4

Question 9

Determine the oxidation number of each of the elements in NaAl(OH)4

Accepted Answer

A)  +1; +3; -2; +1 
B)  +1; +1; -2; +1 
C)  +2; +3; -1; +1 
D)  +1; +3; -2; -1 
E)  None of the above 
A)  +1; +3; -2; +1 
B)  +1; +1; -2; +1 
C)  +2; +3; -1; +1 
D)  +1; +3; -2; -1 
E)  None of the above

Question 10

The distinguishing characteristic of all electrolyte solutions is that they

Accepted Answer

A)  contain molecules. 
B)  conduct electricity. 
C)  react with other solutions. 
D)  always contain acids. 
E)  conduct heat. 
A)  contain molecules. 
B)  conduct electricity. 
C)  react with other solutions. 
D)  always contain acids. 
E)  conduct heat.

Question 11

Most compounds containing chlorides, bromides, and iodides are soluble except those containing Ag+, Hg22+, and Pb2+.

Accepted Answer

A) True 
 B)False

Question 12

A piece of zinc metal was added to an aqueous solution of lead(II) nitrate. After some time it was observed that the zinc metal appeared to fall apart and a solid had accumulated at the bottom of the reaction vessel.Select the balanced chemical equation for this reaction.

Accepted Answer

A)  Zn(s) + Pb(NO3)2(aq) $\rarr$ Pb(s) + Zn(NO3)2(aq) 
B)  2Zn(s) + Pb(NO3)2(aq) $\rarr$ Pb(s) + 2Zn(NO3)2(aq) 
C)  Zn(s) + 2Pb(NO3)2(aq) $\rarr$ Pb(s) + 2Zn(NO3)2(aq) 
D)  Zn(s) + 3Pb(NO3)2(aq) $\rarr$ 3Pb(s) + 3Zn(NO3)2(aq) 
E)  None of the above 
A)  Zn(s) + Pb(NO3)2(aq) $\rarr$ Pb(s) + Zn(NO3)2(aq) 
B)  2Zn(s) + Pb(NO3)2(aq) $\rarr$ Pb(s) + 2Zn(NO3)2(aq) 
C)  Zn(s) + 2Pb(NO3)2(aq) $\rarr$ Pb(s) + 2Zn(NO3)2(aq) 
D)  Zn(s) + 3Pb(NO3)2(aq) $\rarr$ 3Pb(s) + 3Zn(NO3)2(aq) 
E)  None of the above

Question 13

Decide which category to place the following reaction: acid-base neutralization, precipitation, combination, decomposition, combustion, displacement, or disproportionation reaction.
CH4(g) + 2 O2(g) $\rarr$ CO2(g) + 2 H2O(g)

Accepted Answer

A)  Acid-Base Neutralization 
B)  Precipitation 
C)  Decomposition 
D)  Combustion 
E)  Displacement 
A)  Acid-Base Neutralization 
B)  Precipitation 
C)  Decomposition 
D)  Combustion 
E)  Displacement

Question 14

How many total electrons are transferred in the following reaction
2Na(s) + Cl2(g) $\rarr$  2NaCl(s)

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 15

Oxygen is the element being reduced in the following reaction.4Al + 3O2 $\rarr$ 2Al2O3

Accepted Answer

A) True 
 B)False

Question 16

The following net ionic equation correctly shows the result when a piece of zinc metal is added to an aqueous solution of lead(II) nitrate. After some time it was observed that the zinc metal appeared to fall apart and a solid had accumulated at the bottom of the reaction vessel.
Zn(s) + Pb2+(aq) $\rarr$Zn2+(aq) + Pb(s)

Accepted Answer

A) True 
 B)False

Question 17

A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the volume of the solution reaches 250. mL. What is the concentration of nitric acid in the final solution

Accepted Answer

A)  1.27 M 
B)  8.12 * 10-3 M 
C)  0.406 M 
D)  3.25 * 10-2 M 
E)  5.08 * 10-4 M 
A)  1.27 M 
B)  8.12 * 10-3 M 
C)  0.406 M 
D)  3.25 * 10-2 M 
E)  5.08 * 10-4 M

Question 18

What type of reaction is the following
Ca(OH)2(s) + 2 HNO3(aq) $\rarr$ Ca(NO3)2(aq) + 2 H2O(l)

Accepted Answer

A)  Combination reaction 
B)  Acid-base neutralization reaction 
C)  Hydrogen displacement reaction 
D)  Disproportionation reaction 
E)  Combustion reaction 
A)  Combination reaction 
B)  Acid-base neutralization reaction 
C)  Hydrogen displacement reaction 
D)  Disproportionation reaction 
E)  Combustion reaction

Question 19

Identify the correct net ionic equation for the reaction that occurs when solutions of AgNO3 and NH4Cl are mixed.

Accepted Answer

A) AgNO3(aq) + NH4Cl(aq) $\rarr$AgCl(s) + NH4Cl(aq) 
B) NH4+(aq) + NO3-(aq) $\rarr$NH4NO3(s) 
C) AgNO3(aq) + NH4Cl(aq) $\rarr$ AgCl(s) + NH4Cl(s) 
D) Ag+(aq) + Cl-(aq) $\rarr$ AgCl(s) 
E) AgNO3(aq) + NH4+(aq) $\rarr$NH4AgNO3(s) 
A) AgNO3(aq) + NH4Cl(aq) $\rarr$AgCl(s) + NH4Cl(aq) 
B) NH4+(aq) + NO3-(aq) $\rarr$NH4NO3(s) 
C) AgNO3(aq) + NH4Cl(aq) $\rarr$ AgCl(s) + NH4Cl(s) 
D) Ag+(aq) + Cl-(aq) $\rarr$ AgCl(s) 
E) AgNO3(aq) + NH4+(aq) $\rarr$NH4AgNO3(s)

Question 20

Al(NO3)3 is a strong electrolyte.

Accepted Answer

A) True 
 B)False

Exam 4: Reactions in Aqueous Solutions

Which of the following ions is a weak acid

Identify the major ionic species present in an aqueous solution of K2SO4.

34.62 mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution. What is the concentration of the original sulfuric acid solution

Shown here is the balanced molecular equation for the reaction that would occur between CuCl2(aq) and Pb(s). Which of the following, if any, shows the correctly balanced net ionic equation Molecular equation: CuCl2(aq) + Pb(s) →\rarr→ Cu(s) + PbCl2(s)

Predict the products of the following single replacement reaction. Fe(s) + CuSO4(aq) →\rarr→

Categorize the following reaction as an acid-base neutralization, precipitation, combination, decomposition, combustion, displacement, or disproportionation reaction.2KClO3(s) →\rarr→ 2KCl(s) + 3O2(g)

What is the molarity of a solution that contains 5.0 moles of solute in 2.00 liters of solution

For which one of the following acids is chlorine in the +5 oxidation state

Determine the oxidation number of each of the elements in NaAl(OH)4

The distinguishing characteristic of all electrolyte solutions is that they

Most compounds containing chlorides, bromides, and iodides are soluble except those containing Ag+, Hg22+, and Pb2+.

A piece of zinc metal was added to an aqueous solution of lead(II) nitrate. After some time it was observed that the zinc metal appeared to fall apart and a solid had accumulated at the bottom of the reaction vessel.Select the balanced chemical equation for this reaction.

Decide which category to place the following reaction: acid-base neutralization, precipitation, combination, decomposition, combustion, displacement, or disproportionation reaction. CH4(g) + 2 O2(g) →\rarr→ CO2(g) + 2 H2O(g)

How many total electrons are transferred in the following reaction 2Na(s) + Cl2(g) →\rarr→ 2NaCl(s)

Oxygen is the element being reduced in the following reaction.4Al + 3O2 →\rarr→ 2Al2O3

A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the volume of the solution reaches 250. mL. What is the concentration of nitric acid in the final solution

What type of reaction is the following Ca(OH)2(s) + 2 HNO3(aq) →\rarr→ Ca(NO3)2(aq) + 2 H2O(l)

Identify the correct net ionic equation for the reaction that occurs when solutions of AgNO3 and NH4Cl are mixed.

Al(NO3)3 is a strong electrolyte.

Chemistry: The Study of Change

Atoms Molecules and Ions

Mass Relationships in Chemical Reactions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metals Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

Identify the major ionic species present in an aqueous solution of K₂SO₄.

34.62 mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H₂SO₄ solution. What is the concentration of the original sulfuric acid solution

Shown here is the balanced molecular equation for the reaction that would occur between CuCl₂(aq) and Pb(s). Which of the following, if any, shows the correctly balanced net ionic equation Molecular equation: CuCl₂(aq) + Pb(s) $\rarr$ Cu(s) + PbCl₂(s)

Predict the products of the following single replacement reaction. Fe(s) + CuSO₄(aq) $\rarr$

Categorize the following reaction as an acid-base neutralization, precipitation, combination, decomposition, combustion, displacement, or disproportionation reaction.2KClO₃(s) $\rarr$ 2KCl(s) + 3O₂(g)

Determine the oxidation number of each of the elements in NaAl(OH)₄

Most compounds containing chlorides, bromides, and iodides are soluble except those containing Ag⁺, Hg₂²⁺, and Pb²⁺.

Decide which category to place the following reaction: acid-base neutralization, precipitation, combination, decomposition, combustion, displacement, or disproportionation reaction. CH₄(g) + 2 O₂(g) $\rarr$ CO₂(g) + 2 H₂O(g)

How many total electrons are transferred in the following reaction 2Na(s) + Cl₂(g) $\rarr$ 2NaCl(s)

Oxygen is the element being reduced in the following reaction.4Al + 3O₂ $\rarr$ 2Al₂O₃

What type of reaction is the following Ca(OH)₂(s) + 2 HNO₃(aq) $\rarr$ Ca(NO₃)₂(aq) + 2 H₂O(l)

Identify the correct net ionic equation for the reaction that occurs when solutions of AgNO₃ and NH₄Cl are mixed.

Al(NO₃)₃ is a strong electrolyte.