Question 1

Most water-soluble compounds of Group 1A or 2A elements are:

Accepted Answer

A) strong electrolytes 
B) strong acids 
C) weak electrolytes 
D) weak acids 
E) nonelectrolytes 
A) strong electrolytes 
B) strong acids 
C) weak electrolytes 
D) weak acids 
E) nonelectrolytes

Question 2

Which of the following would have the strongest tendency for producing H+ ions in an aqueous solution?

Accepted Answer

A) NH3 
B) HNO2 
C) H2S 
D) HNO3 
E) CH3COOH 
A) NH3 
B) HNO2 
C) H2S 
D) HNO3 
E) CH3COOH

Question 3

A 0.411 g sample of powdered copper mixed with an inert,soluble additive was fully consumed by 23.4 mL of 0.602 M nitric acid,producing copper(II)nitrate,water,and nitric oxide (NO)gas.What was the percent copper (by mass)in the sample?
3 Cu + 8 HNO3 → 3 Cu(NO3)2 + 2 NO + 4 H2O

Accepted Answer

A) 81.7% 
B) 68.3% 
C) 65.3% 
D) 56.9% 
E) 34.4% 
A) 81.7% 
B) 68.3% 
C) 65.3% 
D) 56.9% 
E) 34.4%

Question 4

Gold does not react with either nitric acid or hydrochloric acid but with a combination of both called aqua regia.Identify the reducing agent in the following equation:
Au(s)+ 4 H+(aq)+ NO3-(aq)+ 4 Cl-(aq)→ [AuCl4]-(aq)+ 2 H2O(l)+ NO(g)

Accepted Answer

A) Au 
B) H+  
C) NO3-  
D) Cl-  
E) Au and Cl- 
A) Au 
B) H+  
C) NO3-  
D) Cl-  
E) Au and Cl-

Question 5

What reagent could not be used to separate Br- from CO32- when added to an aqueous solution containing both?

Accepted Answer

A) AgNO3(aq) 
B) Ca(NO3)2(aq) 
C) Cu(NO3)2(aq) 
D) Fe(NO3)2(aq) 
A) AgNO3(aq) 
B) Ca(NO3)2(aq) 
C) Cu(NO3)2(aq) 
D) Fe(NO3)2(aq)

Question 6

For the reaction between aqueous potassium hydroxide and aqueous nitric acid,the so-called "spectator" ions are ________.

Accepted Answer

A) K+ and OH-  
B) H+ and NO3- 
C) K+ and NO3- 
D) H+ and OH-  
A) K+ and OH-  
B) H+ and NO3- 
C) K+ and NO3- 
D) H+ and OH-

Question 7

Write the net ionic equation for the reaction of ammonium chloride and potassium hydroxide.

Accepted Answer

A) NH4Cl(aq)+ KOH(aq)→ NH3(aq)+ KCl(aq)+ H2O(l) 
B) NH4+(aq)+ OH-(aq)→ NH3(aq)+ H2O(l) 
C) NH4Cl(aq)+ OH-(aq)→ NH3(aq)+ Cl-(aq)+ H2O(l) 
D) NH4+(aq)+ KOH(s)→ NH4OH(aq)+ K+(aq) 
E) no reaction 
A) NH4Cl(aq)+ KOH(aq)→ NH3(aq)+ KCl(aq)+ H2O(l) 
B) NH4+(aq)+ OH-(aq)→ NH3(aq)+ H2O(l) 
C) NH4Cl(aq)+ OH-(aq)→ NH3(aq)+ Cl-(aq)+ H2O(l) 
D) NH4+(aq)+ KOH(s)→ NH4OH(aq)+ K+(aq) 
E) no reaction

Question 8

Which one of the following compounds behaves as an acid when dissolved in water?

Accepted Answer

A) RaO 
B) C4H10 
C) HI 
D) RbOH 
A) RaO 
B) C4H10 
C) HI 
D) RbOH

Question 9

Soluble ionic compounds form strong electrolytes.

Accepted Answer

A) True 
 B)False

Question 10

Write the net ionic equation for the reaction of aqueous solutions of barium chloride and sodium sulfate.

Accepted Answer

A) BaCl(aq)+ NaSO4(aq)→ BaSO4(s)+ NaCl(aq) 
B) BaCl(aq)+ SO42- (aq)→ BaSO4(s)+ Ba2+ (aq) 
C) Ba2+(aq)+ SO42-(aq)→ BaSO4(aq) 
D) Ba2+ (aq)+ SO42- (aq)→ BaSO4(s) 
E) no reaction 
A) BaCl(aq)+ NaSO4(aq)→ BaSO4(s)+ NaCl(aq) 
B) BaCl(aq)+ SO42- (aq)→ BaSO4(s)+ Ba2+ (aq) 
C) Ba2+(aq)+ SO42-(aq)→ BaSO4(aq) 
D) Ba2+ (aq)+ SO42- (aq)→ BaSO4(s) 
E) no reaction

Question 11

What volume of 0.110 M H2SO4 is required to exactly neutralize 10.0 mL of 0.085 M NaOH?

Accepted Answer

A) 7.7 mL 
B) 1.9 mL 
C) 0.39 mL 
D) 3.9 mL 
E) 0.19 mL 
A) 7.7 mL 
B) 1.9 mL 
C) 0.39 mL 
D) 3.9 mL 
E) 0.19 mL

Question 12

Which of the following is most likely to act as a reducing agent?

Accepted Answer

A) H2S 
B) H2SO5 
C) SO3 
D) H2SO4 
E) H2S2O8 
A) H2S 
B) H2SO5 
C) SO3 
D) H2SO4 
E) H2S2O8

Question 13

When the following equation is completed and balanced for the reaction in acidic aqueous solution,what is the proper coefficient for H+?
Zn(s)+ Cr2O72- (aq)→ Zn2+ (aq)+ Cr2+ (aq)

Accepted Answer

A) 22 
B) 18 
C) 14 
D) 11 
E) 7 
A) 22 
B) 18 
C) 14 
D) 11 
E) 7

Question 14

Balance the following oxidation-reduction reaction in acid solution:
SO32-(aq)+ MnO4-(aq)→ SO42-(aq)+ Mn2+(aq)+ H2O(l)
The sum of the coefficients is ________.

Accepted Answer

A) 23 
B) 30 
C) 13 
D) 45 
E) 28 
A) 23 
B) 30 
C) 13 
D) 45 
E) 28

Question 15

When dissolved in water,KOH behaves as:

Accepted Answer

A) an acid that forms K+ and OH- ions 
B) an acid that forms KO- and H+ ions 
C) a base that forms K+ and OH- ions 
D) a base that forms KO- and H+ ions 
A) an acid that forms K+ and OH- ions 
B) an acid that forms KO- and H+ ions 
C) a base that forms K+ and OH- ions 
D) a base that forms KO- and H+ ions

Question 16

Oxidation never occurs alone.

Accepted Answer

A) True 
 B)False

Question 17

The analysis for iron usually is done by titration with permanganate.Identify the oxidizing agent in the following equation:
MnO4-(aq)+ 5 Fe2+(aq)+ 8 H+(aq)→ 5 Fe3+(aq)+ Mn2+(aq)+ 4 H2O(l)

Accepted Answer

A) MnO4-  
B) Fe2+  
C) H+  
D) Mn2+  
E) It is not a redox reaction. 
A) MnO4-  
B) Fe2+  
C) H+  
D) Mn2+  
E) It is not a redox reaction.

Question 18

Write the net ionic equation for the reaction of magnesium carbonate and nitric acid.

Accepted Answer

A) MgCO3(s)+ 2 H+(aq)→ Mg2+(aq)+ H2O(l)+ CO2(g) 
B) MgCO3(s)+ 2 HNO3(aq)→ Mg(NO3)2(aq)+ H2O(l)+ CO2(g) 
C) MgCO3(s)+ 2 HNO3(aq)→ Mg(NO3)2(aq)+ H2CO3(aq) 
D) Mg2+(aq)+ CO32-(aq)+ 2 H+(aq)→ Mg2+(aq)+ H2O(l)+ CO2(g) 
E) no reaction 
A) MgCO3(s)+ 2 H+(aq)→ Mg2+(aq)+ H2O(l)+ CO2(g) 
B) MgCO3(s)+ 2 HNO3(aq)→ Mg(NO3)2(aq)+ H2O(l)+ CO2(g) 
C) MgCO3(s)+ 2 HNO3(aq)→ Mg(NO3)2(aq)+ H2CO3(aq) 
D) Mg2+(aq)+ CO32-(aq)+ 2 H+(aq)→ Mg2+(aq)+ H2O(l)+ CO2(g) 
E) no reaction

Question 19

Write the net ionic equation for the reaction of ammonium chloride and iron(III)hydroxide.

Accepted Answer

A) 3 NH4Cl(aq)+ Fe(OH)3(s)→ 3 NH3(aq)+ 3 H2O(l)+ FeCl3(s) 
B) 3 NH4+(aq)+ 3 OH-(aq)→ 3 NH3(aq)+ 3 H2O(l) 
C) 3 NH4Cl(aq)+ 3 OH-(aq)→ 3 NH3(aq)+ 3 H2O(l)+ 3 Cl-(aq) 
D) 3 NH4+(aq)+ Fe(OH)3(s)→ 3 NH3(aq)+ 3 H2O(l)+ Fe3+(aq) 
E) no reaction 
A) 3 NH4Cl(aq)+ Fe(OH)3(s)→ 3 NH3(aq)+ 3 H2O(l)+ FeCl3(s) 
B) 3 NH4+(aq)+ 3 OH-(aq)→ 3 NH3(aq)+ 3 H2O(l) 
C) 3 NH4Cl(aq)+ 3 OH-(aq)→ 3 NH3(aq)+ 3 H2O(l)+ 3 Cl-(aq) 
D) 3 NH4+(aq)+ Fe(OH)3(s)→ 3 NH3(aq)+ 3 H2O(l)+ Fe3+(aq) 
E) no reaction

Question 20

To precipitate Cd2+(aq)from solution one could add:

Accepted Answer

A) H2S(aq) 
B) HCl(aq) 
C) HNO3(aq) 
D) KI(aq) 
E) NaCl(aq) 
A) H2S(aq) 
B) HCl(aq) 
C) HNO3(aq) 
D) KI(aq) 
E) NaCl(aq)

Exam 5: Introduction to Reactions in Aqueous Solutions

Most water-soluble compounds of Group 1A or 2A elements are:

Which of the following would have the strongest tendency for producing H+ ions in an aqueous solution?

A 0.411 g sample of powdered copper mixed with an inert,soluble additive was fully consumed by 23.4 mL of 0.602 M nitric acid,producing copper(II)nitrate,water,and nitric oxide (NO)gas.What was the percent copper (by mass)in the sample? 3 Cu + 8 HNO3 → 3 Cu(NO3)2 + 2 NO + 4 H2O

Gold does not react with either nitric acid or hydrochloric acid but with a combination of both called aqua regia.Identify the reducing agent in the following equation: Au(s)+ 4 H+(aq)+ NO3-(aq)+ 4 Cl-(aq)→ [AuCl4]-(aq)+ 2 H2O(l)+ NO(g)

What reagent could not be used to separate Br- from CO32- when added to an aqueous solution containing both?

For the reaction between aqueous potassium hydroxide and aqueous nitric acid,the so-called "spectator" ions are ________.

Write the net ionic equation for the reaction of ammonium chloride and potassium hydroxide.

Which one of the following compounds behaves as an acid when dissolved in water?

Soluble ionic compounds form strong electrolytes.

Write the net ionic equation for the reaction of aqueous solutions of barium chloride and sodium sulfate.

What volume of 0.110 M H2SO4 is required to exactly neutralize 10.0 mL of 0.085 M NaOH?

Which of the following is most likely to act as a reducing agent?

When the following equation is completed and balanced for the reaction in acidic aqueous solution,what is the proper coefficient for H+? Zn(s)+ Cr2O72- (aq)→ Zn2+ (aq)+ Cr2+ (aq)

Balance the following oxidation-reduction reaction in acid solution: SO32-(aq)+ MnO4-(aq)→ SO42-(aq)+ Mn2+(aq)+ H2O(l) The sum of the coefficients is ________.

When dissolved in water,KOH behaves as:

Oxidation never occurs alone.

The analysis for iron usually is done by titration with permanganate.Identify the oxidizing agent in the following equation: MnO4-(aq)+ 5 Fe2+(aq)+ 8 H+(aq)→ 5 Fe3+(aq)+ Mn2+(aq)+ 4 H2O(l)

Write the net ionic equation for the reaction of magnesium carbonate and nitric acid.

Write the net ionic equation for the reaction of ammonium chloride and iron(III)hydroxide.

To precipitate Cd2+(aq)from solution one could add:

Matter: Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

Which of the following would have the strongest tendency for producing H⁺ ions in an aqueous solution?

A 0.411 g sample of powdered copper mixed with an inert,soluble additive was fully consumed by 23.4 mL of 0.602 M nitric acid,producing copper(II)nitrate,water,and nitric oxide (NO)gas.What was the percent copper (by mass)in the sample? 3 Cu + 8 HNO₃→ 3 Cu(NO₃)₂ + 2 NO + 4 H₂O

Gold does not react with either nitric acid or hydrochloric acid but with a combination of both called aqua regia.Identify the reducing agent in the following equation: Au(s)+ 4 H⁺(aq)+ NO₃^-(aq)+ 4 Cl^-(aq)→ [AuCl₄]^-(aq)+ 2 H₂O(l)+ NO(g)

What reagent could not be used to separate Br^- from CO₃^2- when added to an aqueous solution containing both?

What volume of 0.110 M H₂SO₄ is required to exactly neutralize 10.0 mL of 0.085 M NaOH?

When the following equation is completed and balanced for the reaction in acidic aqueous solution,what is the proper coefficient for H⁺? Zn(s)+ Cr₂O₇^2-(aq)→ Zn²⁺(aq)+ Cr²⁺(aq)

Balance the following oxidation-reduction reaction in acid solution: SO₃^2-(aq)+ MnO₄^-(aq)→ SO₄^2-(aq)+ Mn²⁺(aq)+ H₂O(l) The sum of the coefficients is ________.

The analysis for iron usually is done by titration with permanganate.Identify the oxidizing agent in the following equation: MnO₄^-(aq)+ 5 Fe²⁺(aq)+ 8 H⁺(aq)→ 5 Fe³⁺(aq)+ Mn²⁺(aq)+ 4 H₂O(l)

To precipitate Cd²⁺(aq)from solution one could add: