Question 1

Which one of the following is a redox reaction

Accepted Answer

A)  2Al(s) + 3H2SO4(aq) $\rarr$Al2(SO4)3(aq) + 3H2(g) 
B) 2KBr(aq) + Pb(NO3)2(aq) $\rarr$ 2KNO3(aq) + PbBr2(s) 
C) CaBr2(aq) + H2SO4(aq) $\rarr$ CaSO4(s) + 2HBr(g) 
D) H+(aq) + OH- (aq) $\rarr$ H2O(l) 
E)  CO32- (aq) + HSO4-(aq) $\rarr$HCO3- (aq) + SO42- (aq) 
A)  2Al(s) + 3H2SO4(aq) $\rarr$Al2(SO4)3(aq) + 3H2(g) 
B) 2KBr(aq) + Pb(NO3)2(aq) $\rarr$ 2KNO3(aq) + PbBr2(s) 
C) CaBr2(aq) + H2SO4(aq) $\rarr$ CaSO4(s) + 2HBr(g) 
D) H+(aq) + OH- (aq) $\rarr$ H2O(l) 
E)  CO32- (aq) + HSO4-(aq) $\rarr$HCO3- (aq) + SO42- (aq)

Question 2

Which of the following is NOT a redox reaction

Accepted Answer

A) 2KBr(aq) + Cl2(g) $\rarr$ 2KCl(aq) + Br2(l) 
B) 2Na(s) + 2H2O(l) $\rarr$ 2NaOH(aq) + H2(g) 
C)  V2O5(s) + 5 Ca(l) $\rarr$ 2 V(l) + 5 CaO(s) 
D) 2KNO3(s) $\rarr$ 2KNO2(s) + O2(g) 
E) 2LiOH(aq) + H2SO4(aq) $\rarr$ Li2SO4(aq) + 2H2O(l) 
A) 2KBr(aq) + Cl2(g) $\rarr$ 2KCl(aq) + Br2(l) 
B) 2Na(s) + 2H2O(l) $\rarr$ 2NaOH(aq) + H2(g) 
C)  V2O5(s) + 5 Ca(l) $\rarr$ 2 V(l) + 5 CaO(s) 
D) 2KNO3(s) $\rarr$ 2KNO2(s) + O2(g) 
E) 2LiOH(aq) + H2SO4(aq) $\rarr$ Li2SO4(aq) + 2H2O(l)

Question 3

Which of the following compounds is a weak electrolyte

Accepted Answer

A)  HCl 
B)  CH3COOH (acetic acid) 
C)  C6H12O6 (glucose) 
D)  O2 
E)  NaCl 
A)  HCl 
B)  CH3COOH (acetic acid) 
C)  C6H12O6 (glucose) 
D)  O2 
E)  NaCl

Question 4

Based on the solubility rules, which one of the following compounds should be insoluble in water

Accepted Answer

A)  NaCl 
B)  MgBr2 
C)  FeCl2 
D)  AgBr 
E)  ZnCl2 
A)  NaCl 
B)  MgBr2 
C)  FeCl2 
D)  AgBr 
E)  ZnCl2

Question 5

Which of the following equations does not represent an oxidation-reduction reaction

Accepted Answer

A) 3Al + 6HCl $\rarr$ 3H2 + AlCl3 
B) 2H2O $\rarr$ 2H2 + O2 
C) 2NaCl + Pb(NO3)2 $\rarr$ PbCl2 + 3NaNO3 
D) 2NaI + Br2 $\rarr$ 2NaBr + I2 
E)  Cu(NO3)2 + Zn $\rarr$Zn(NO3)2 + Cu 
A) 3Al + 6HCl $\rarr$ 3H2 + AlCl3 
B) 2H2O $\rarr$ 2H2 + O2 
C) 2NaCl + Pb(NO3)2 $\rarr$ PbCl2 + 3NaNO3 
D) 2NaI + Br2 $\rarr$ 2NaBr + I2 
E)  Cu(NO3)2 + Zn $\rarr$Zn(NO3)2 + Cu

Question 6

What type of reaction is the following
C2H4(g) + 3 O2(g) $\rarr$ 2 CO2(g) + 2 H2O(g)

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 7

Identify the correct net ionic equation for the reaction that occurs when solutions of Ba(ClO4)2 and K2SO4 are mixed.

Accepted Answer

A) Ba2+(aq) + SO42-(aq) $\rarr$ BaSO4(s) 
B) 2K+(aq) + 2ClO4-(aq) $\rarr$K2(ClO4)2(s) 
C) K+(aq) + ClO4-(aq) $\rarr$ KClO4(s) 
D) Ba(ClO4)2(aq) + K2SO4(aq) $\rarr$ BaSO4(s) + 2KClO4(s) 
E)  Ba2+(aq) + K+(aq) + SO42-(aq) $\rarr$ KBaSO4(s) 
A) Ba2+(aq) + SO42-(aq) $\rarr$ BaSO4(s) 
B) 2K+(aq) + 2ClO4-(aq) $\rarr$K2(ClO4)2(s) 
C) K+(aq) + ClO4-(aq) $\rarr$ KClO4(s) 
D) Ba(ClO4)2(aq) + K2SO4(aq) $\rarr$ BaSO4(s) + 2KClO4(s) 
E)  Ba2+(aq) + K+(aq) + SO42-(aq) $\rarr$ KBaSO4(s)

Question 8

H3PO4 is a weak electrolyte.

Accepted Answer

A) True 
 B)False

Question 9

Silver chloride (AgCl) has an extremely low solubility in water; therefore, it is a weak electrolyte.

Accepted Answer

A) True 
 B)False

Question 10

Shown here is the balanced molecular equation that would occur between CaCl2(aq) and Na2CO3(aq). Which of the following is the balanced net ionic equation
Molecular equation: CaCl2(aq) + Na2CO3(aq) $\rarr$CaCO3(s) + 2NaCl(aq)

Accepted Answer

A)  Net ionic equation: Ca2+(aq) + 2 Cl-(aq) $\rarr$ CaCO3(s) 
B)  Net ionic equation: Ca2+(aq) + CO32-(aq) $\rarr$ Ca2+(aq) + CO3(aq) 
C)  Net ionic equation: Ca2+(aq) + CO32-(aq) $\rarr$ CaCO3(s) 
D)  Net ionic equation: 2Na+(aq) + CO32-(aq) $\rarr$Na2CO3(s) 
E)  None of the above 
A)  Net ionic equation: Ca2+(aq) + 2 Cl-(aq) $\rarr$ CaCO3(s) 
B)  Net ionic equation: Ca2+(aq) + CO32-(aq) $\rarr$ Ca2+(aq) + CO3(aq) 
C)  Net ionic equation: Ca2+(aq) + CO32-(aq) $\rarr$ CaCO3(s) 
D)  Net ionic equation: 2Na+(aq) + CO32-(aq) $\rarr$Na2CO3(s) 
E)  None of the above

Question 11

Identify the major ionic species present in an aqueous solution of C6H12O6 (glucose).

Accepted Answer

A)  6 C-, 12 H+, 6 O- 
B)  6 C+, 12 H+, 6 O2- 
C)  6 CH2+, 6 O2- 
D)  C6+, 12 H+, 6 O2- 
E)  no ions are present 
A)  6 C-, 12 H+, 6 O- 
B)  6 C+, 12 H+, 6 O2- 
C)  6 CH2+, 6 O2- 
D)  C6+, 12 H+, 6 O2- 
E)  no ions are present

Question 12

A 430. mL solution of 0.230 M HBr(aq) is mixed with a solution of 225 mL of 0.350 M HClO4(aq). How many moles of H+(aq) are present in the final solution

Accepted Answer

A)  0.0989 moles H+ 
B)  0.0888 moles H+ 
C)  0.290 moles H+ 
D)  0.178 moles H+ 
E)  0.271 moles H+ 
A)  0.0989 moles H+ 
B)  0.0888 moles H+ 
C)  0.290 moles H+ 
D)  0.178 moles H+ 
E)  0.271 moles H+

Question 13

Na3PO4 is an example of a triproticacid.

Accepted Answer

A) True 
 B)False

Question 14

A 50.0 mL sample of 0.436 M NH4NO3 is diluted with water to a total volume of 250.0 mL. What is the ammonium nitrate concentration in the resulting solution

Accepted Answer

A)  21.8 M 
B)  0.459 M 
C)  2.18 * 10-2 M 
D)  8.72 * 10-2 M 
E)  0.109 M 
A)  21.8 M 
B)  0.459 M 
C)  2.18 * 10-2 M 
D)  8.72 * 10-2 M 
E)  0.109 M

Question 15

CH3COOH is a weak electrolyte.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is an example of a disproportionation reaction

Accepted Answer

A)  2C2H6(g) + 7O2(g) $\rarr$4CO2(g) + 6H2O(l) 
B) 2KBr(aq) + Cl2(g) $\rarr$ 2KCl(aq) + Br2(l) 
C)  2H2O2(aq) $\rarr$ 2H2O(l) + O2(g) 
D) CaBr2(aq) + H2SO4(aq) $\rarr$ CaSO4(s) + 2HBr(g) 
E)  2Al(s) + 3H2SO4(aq) $\rarr$ Al2(SO4)3(aq) + 3H2(g) 
A)  2C2H6(g) + 7O2(g) $\rarr$4CO2(g) + 6H2O(l) 
B) 2KBr(aq) + Cl2(g) $\rarr$ 2KCl(aq) + Br2(l) 
C)  2H2O2(aq) $\rarr$ 2H2O(l) + O2(g) 
D) CaBr2(aq) + H2SO4(aq) $\rarr$ CaSO4(s) + 2HBr(g) 
E)  2Al(s) + 3H2SO4(aq) $\rarr$ Al2(SO4)3(aq) + 3H2(g)

Question 17

A 110. mL solution of 0.340 M HCl(aq) is mixed with a solution of 330. mL of 0.150 M HNO3(aq). The solution is then diluted to a final volume of 1.00 L. How many moles of H+ are present in the final solution

Accepted Answer

A)  0.0869 moles H+ 
B)  0.490 moles H+ 
C)  0.415 moles H+ 
D)  0.374 moles H+ 
E)  0.0435 moles H+ 
A)  0.0869 moles H+ 
B)  0.490 moles H+ 
C)  0.415 moles H+ 
D)  0.374 moles H+ 
E)  0.0435 moles H+

Question 18

Based on the solubility rules, which of the following should be soluble in water

Accepted Answer

A)  CaSO4 
B)  BaSO4 
C)  PbSO4 
D)  K2SO4 
E)  AgCl 
A)  CaSO4 
B)  BaSO4 
C)  PbSO4 
D)  K2SO4 
E)  AgCl

Question 19

What compound is formed, as a precipitate, when solutions of Hg2(ClO4)2(aq), (NH4)2SO4(aq), and Rb2SO4(aq) are mixed

Accepted Answer

A)  RbClO4 
B)  Rb2(ClO4)3 
C)  Hg2SO4 
D)  HgSO4 
E)  None of the above 
A)  RbClO4 
B)  Rb2(ClO4)3 
C)  Hg2SO4 
D)  HgSO4 
E)  None of the above

Question 20

Which of the following compounds is a weak base

Accepted Answer

A)  KOH 
B)  Sc(OH)3 
C)  NH3 
D)  NH4+ 
E)  CO2 
A)  KOH 
B)  Sc(OH)3 
C)  NH3 
D)  NH4+ 
E)  CO2

Exam 4: Reactions in Aqueous Solutions

Which one of the following is a redox reaction

Which of the following is NOT a redox reaction

Which of the following compounds is a weak electrolyte

Based on the solubility rules, which one of the following compounds should be insoluble in water

Which of the following equations does not represent an oxidation-reduction reaction

What type of reaction is the following C2H4(g) + 3 O2(g) →\rarr→ 2 CO2(g) + 2 H2O(g)

Identify the correct net ionic equation for the reaction that occurs when solutions of Ba(ClO4)2 and K2SO4 are mixed.

H3PO4 is a weak electrolyte.

Silver chloride (AgCl) has an extremely low solubility in water; therefore, it is a weak electrolyte.

Shown here is the balanced molecular equation that would occur between CaCl2(aq) and Na2CO3(aq). Which of the following is the balanced net ionic equation Molecular equation: CaCl2(aq) + Na2CO3(aq) →\rarr→ CaCO3(s) + 2NaCl(aq)

Identify the major ionic species present in an aqueous solution of C6H12O6 (glucose).

A 430. mL solution of 0.230 M HBr(aq) is mixed with a solution of 225 mL of 0.350 M HClO4(aq). How many moles of H+(aq) are present in the final solution

Na3PO4 is an example of a triproticacid.

A 50.0 mL sample of 0.436 M NH4NO3 is diluted with water to a total volume of 250.0 mL. What is the ammonium nitrate concentration in the resulting solution

CH3COOH is a weak electrolyte.

Which of the following is an example of a disproportionation reaction

A 110. mL solution of 0.340 M HCl(aq) is mixed with a solution of 330. mL of 0.150 M HNO3(aq). The solution is then diluted to a final volume of 1.00 L. How many moles of H+ are present in the final solution

Based on the solubility rules, which of the following should be soluble in water

What compound is formed, as a precipitate, when solutions of Hg2(ClO4)2(aq), (NH4)2SO4(aq), and Rb2SO4(aq) are mixed

Which of the following compounds is a weak base

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

What type of reaction is the following C₂H₄(g) + 3 O₂(g) $\rarr$ 2 CO₂(g) + 2 H₂O(g)

Identify the correct net ionic equation for the reaction that occurs when solutions of Ba(ClO₄)₂ and K₂SO₄ are mixed.

H₃PO₄ is a weak electrolyte.

Shown here is the balanced molecular equation that would occur between CaCl₂(aq) and Na₂CO₃(aq). Which of the following is the balanced net ionic equation Molecular equation: CaCl₂(aq) + Na₂CO₃(aq) $\rarr$ CaCO₃(s) + 2NaCl(aq)

Identify the major ionic species present in an aqueous solution of C₆H₁₂O₆ (glucose).

A 430. mL solution of 0.230 M HBr(aq) is mixed with a solution of 225 mL of 0.350 M HClO₄(aq). How many moles of H⁺(aq) are present in the final solution

Na₃PO₄ is an example of a triproticacid.

A 50.0 mL sample of 0.436 M NH₄NO₃ is diluted with water to a total volume of 250.0 mL. What is the ammonium nitrate concentration in the resulting solution

CH₃COOH is a weak electrolyte.

A 110. mL solution of 0.340 M HCl(aq) is mixed with a solution of 330. mL of 0.150 M HNO₃(aq). The solution is then diluted to a final volume of 1.00 L. How many moles of H⁺ are present in the final solution

What compound is formed, as a precipitate, when solutions of Hg₂(ClO₄)₂(aq), (NH₄)₂SO₄(aq), and Rb₂SO₄(aq) are mixed