Question 1

The spectator ion is always included in the net ionic equation.

Accepted Answer

A) True 
 B)False

Question 2

What is the oxidizing agent in the following reaction? 5Fe2+(aq)+ MnO4-(aq)+ 8H+(aq)→ 5Fe3+(aq)+ Mn2+(aq)+ 4H2O(l)

Accepted Answer

A) Fe2+ 
B) MnO4- 
C) H+ 
D) Mn2+ 
E) Fe3+ 
A) Fe2+ 
B) MnO4- 
C) H+ 
D) Mn2+ 
E) Fe3+

Question 3

The ______________ ______________ is the point in the titration where the moles of base added is equal to the moles of acid.

Accepted Answer

The answer of The ______________ ______________ is the point in...

Question 4

Which substance is present in the largest proportion in a solution?

Accepted Answer

A) salute 
B) gas 
C) solvent 
D) solid 
E) solute 
A) salute 
B) gas 
C) solvent 
D) solid 
E) solute

Question 5

Based on the solubility rules,which one of these compounds is soluble in water?

Accepted Answer

A) CaSO4 
B) BaSO4 
C) PbSO4 
D) K2SO4 
E) Ag2SO4 
A) CaSO4 
B) BaSO4 
C) PbSO4 
D) K2SO4 
E) Ag2SO4

Question 6

Which of these chemical equations describes a precipitation reaction?

Accepted Answer

A) 2H2(g)+ O2(g)→ 2H2O(l) 
B) CaBr2(aq)+ H2SO4 (aq)→ CaSO4(s)+ 2HBr(g) 
C) 2KNO3(s)→ 2KNO2(s)+ O2(g) 
D) 2KBr(aq)+ Cl2(g)→ 2KCl(aq)+ Br2(l) 
E) 2Al(s)+ 3H2SO4(aq)→ Al2(SO4)3(aq)+ 3H2(g) 
A) 2H2(g)+ O2(g)→ 2H2O(l) 
B) CaBr2(aq)+ H2SO4 (aq)→ CaSO4(s)+ 2HBr(g) 
C) 2KNO3(s)→ 2KNO2(s)+ O2(g) 
D) 2KBr(aq)+ Cl2(g)→ 2KCl(aq)+ Br2(l) 
E) 2Al(s)+ 3H2SO4(aq)→ Al2(SO4)3(aq)+ 3H2(g)

Question 7

A 4.691-g sample of MgCl2 is dissolved in enough water to give 750.mL of solution.What is the magnesium ion concentration in this solution?

Accepted Answer

A) 6.25 M 
B) 6.57 × 10-2 M 
C) 4.38 × 10-2 M 
D) 3.29 × 10-2 M 
E) 2.19 ×10-2 M 
A) 6.25 M 
B) 6.57 × 10-2 M 
C) 4.38 × 10-2 M 
D) 3.29 × 10-2 M 
E) 2.19 ×10-2 M

Question 8

Identify the major ions present in an aqueous LiOH solution.

Accepted Answer

A) Li2+,O-,H- 
B) Li+,OH- 
C) LiO-,H+ 
D) Li+,O2-,H+ 
E) Li-,OH+ 
A) Li2+,O-,H- 
B) Li+,OH- 
C) LiO-,H+ 
D) Li+,O2-,H+ 
E) Li-,OH+

Question 9

Which is the correct description of a solution?

Accepted Answer

A) A solution is a heterogeneous mixture of two or more substances. 
B) A solution is a homogeneous mixture of two or more substances. 
C) A solution may be a gas,solid,or liquid. 
D) A solution is any mixture of two or more substances. 
E) The first and second choices are correct 
A) A solution is a heterogeneous mixture of two or more substances. 
B) A solution is a homogeneous mixture of two or more substances. 
C) A solution may be a gas,solid,or liquid. 
D) A solution is any mixture of two or more substances. 
E) The first and second choices are correct

Question 10

If aqueous solutions of Na2CO3 and BaCl2 are mixed,which insoluble precipitate is formed?

Accepted Answer

A) Ba2CO3 
B) BaCO3 
C) NaCl 
D) NaCl2 
E) BaO 
A) Ba2CO3 
B) BaCO3 
C) NaCl 
D) NaCl2 
E) BaO

Question 11

Sodium hydroxide is water soluble.

Accepted Answer

A) True 
 B)False

Question 12

Which of these chemical equations describes a metal displacement reaction?

Accepted Answer

A) 2NaN3(s)→ 2Na(s)+ 3N2(g) 
B) Fe2O3(s)+ 2Al(s)→ 2Fe(s)+ Al2O3(s) 
C) 3NO2(g)+ H2O(l)→ 2HNO3(aq)+ NO(g) 
D) 2P(s)+ 3Cl2(g)→ 2PCl3(g) 
E) 2ZnS(s)+ 3O2(g)→ 2ZnO(s)+ 2SO2(g) 
A) 2NaN3(s)→ 2Na(s)+ 3N2(g) 
B) Fe2O3(s)+ 2Al(s)→ 2Fe(s)+ Al2O3(s) 
C) 3NO2(g)+ H2O(l)→ 2HNO3(aq)+ NO(g) 
D) 2P(s)+ 3Cl2(g)→ 2PCl3(g) 
E) 2ZnS(s)+ 3O2(g)→ 2ZnO(s)+ 2SO2(g)

Question 13

In the reaction 5H2O2 + 2MnO4- + 6H+→ 2Mn2+ + 8H2O + 5O2,what is the oxidizing agent?

Accepted Answer

A) H2O2 
B) MnO4- 
C) H+ 
D) Mn2+ 
E) O2 
A) H2O2 
B) MnO4- 
C) H+ 
D) Mn2+ 
E) O2

Question 14

Which represents the result of mixing equal volumes of 1 M aluminum chloride,2 M magnesium chloride,and 1 M potassium chloride solution? (Each sphere represents 1 mol of ions.)

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 15

A 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

Question 16

What volume of water must be added to 300 mL of 0.75 M HCl to dilute the solution to 0.25 M?

Accepted Answer

A) 900 mL 
B) 600 mL 
C) 300 mL 
D) 930 mL 
E) 100 mL 
A) 900 mL 
B) 600 mL 
C) 300 mL 
D) 930 mL 
E) 100 mL

Question 17

Which salt is produced by the neutralization of nitric acid with calcium hydroxide?

Accepted Answer

A) CaNO3 
B) Ca2(NO3)3 
C) Ca3(NO3)2 
D) Ca2NO3 
E) Ca(NO3)2 
A) CaNO3 
B) Ca2(NO3)3 
C) Ca3(NO3)2 
D) Ca2NO3 
E) Ca(NO3)2

Question 18

Which of these 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 19

Which of these compounds is a strong electrolyte?

Accepted Answer

A) H2O 
B) N2 
C) CH3COOH (acetic acid) 
D) C2H6O (ethanol) 
E) KOH 
A) H2O 
B) N2 
C) CH3COOH (acetic acid) 
D) C2H6O (ethanol) 
E) KOH

Question 20

If aqueous solutions of Pb(NO3)2 and NaCl are mixed,which ions,if any,are spectator ions? Pb(NO3)2(aq)+ 2NaCl(aq)→ PbCl2(s)+ 2NaNO3(aq)

Accepted Answer

A) Pb2+(aq),Cl-(aq) 
B) Na+(aq),NO3- (aq) 
C) Pb2+(aq),NO3-(aq) 
D) Na+(aq),Cl-(aq) 
E) None are spectator ions. 
A) Pb2+(aq),Cl-(aq) 
B) Na+(aq),NO3- (aq) 
C) Pb2+(aq),NO3-(aq) 
D) Na+(aq),Cl-(aq) 
E) None are spectator ions.

Exam 4: Reactions in Aqueous Solutions

The spectator ion is always included in the net ionic equation.

What is the oxidizing agent in the following reaction? 5Fe2+(aq)+ MnO4-(aq)+ 8H+(aq)→ 5Fe3+(aq)+ Mn2+(aq)+ 4H2O(l)

The ______________ ______________ is the point in the titration where the moles of base added is equal to the moles of acid.

Which substance is present in the largest proportion in a solution?

Based on the solubility rules,which one of these compounds is soluble in water?

Which of these chemical equations describes a precipitation reaction?

A 4.691-g sample of MgCl2 is dissolved in enough water to give 750.mL of solution.What is the magnesium ion concentration in this solution?

Identify the major ions present in an aqueous LiOH solution.

Which is the correct description of a solution?

If aqueous solutions of Na2CO3 and BaCl2 are mixed,which insoluble precipitate is formed?

Sodium hydroxide is water soluble.

Which of these chemical equations describes a metal displacement reaction?

In the reaction 5H2O2 + 2MnO4- + 6H+→ 2Mn2+ + 8H2O + 5O2,what is the oxidizing agent?

Which represents the result of mixing equal volumes of 1 M aluminum chloride,2 M magnesium chloride,and 1 M potassium chloride solution? (Each sphere represents 1 mol of ions.)

A 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?

What volume of water must be added to 300 mL of 0.75 M HCl to dilute the solution to 0.25 M?

Which salt is produced by the neutralization of nitric acid with calcium hydroxide?

Which of these compounds is a weak electrolyte?

Which of these compounds is a strong electrolyte?

If aqueous solutions of Pb(NO3)2 and NaCl are mixed,which ions,if any,are spectator ions? Pb(NO3)2(aq)+ 2NaCl(aq)→ PbCl2(s)+ 2NaNO3(aq)

Chemistry: the Central Science

Atoms Molecules and Ions

Stoichiometry Ratios of Combination

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Chemical Bonding Ii Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

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Nonmetallic Elements and Their Compounds

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Filters

What is the oxidizing agent in the following reaction? 5Fe²⁺(aq)+ MnO₄^-(aq)+ 8H⁺(aq)→ 5Fe³⁺(aq)+ Mn²⁺(aq)+ 4H₂O(l)

The is the point in the titration where the moles of base added is equal to the moles of acid.

A 4.691-g sample of MgCl₂ is dissolved in enough water to give 750.mL of solution.What is the magnesium ion concentration in this solution?

If aqueous solutions of Na₂CO₃ and BaCl₂ are mixed,which insoluble precipitate is formed?

In the reaction 5H₂O₂ + 2MnO₄^- + 6H⁺→ 2Mn²⁺ + 8H₂O + 5O₂,what is the oxidizing agent?

A 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?

If aqueous solutions of Pb(NO₃)₂ and NaCl are mixed,which ions,if any,are spectator ions? Pb(NO₃)₂(aq)+ 2NaCl(aq)→ PbCl₂(s)+ 2NaNO₃(aq)