Question 1

What are the spectator ions in the reaction between KOH (aq)and HNO3 (aq)?

Accepted Answer

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

Question 2

The net ionic equation for the reaction between aqueous sulfuric acid and aqueous sodium hydroxide is ________.

Accepted Answer

A) H+ (aq) + HSO4- (aq) + 2OH- (aq) → 2H2O (l) + SO42- (aq) 
B) H+ (aq) + HSO4- (aq) + 2Na+ (aq) + 2OH- (aq) → 2H2O (l) + 2Na+ (aq) + SO42-(aq) 
C) SO42- (aq) + 2Na+ (aq) → 2Na+ (aq) + SO42-(aq) 
D) H+ (aq) + OH- (aq) → H2O( l) 
E) 2H+ (aq) + SO42- (aq) + 2Na+ (aq) + 2OH- (aq) → 2H2O (l) + 2Na+ (aq) + SO42- (aq) 
A) H+ (aq) + HSO4- (aq) + 2OH- (aq) → 2H2O (l) + SO42- (aq) 
B) H+ (aq) + HSO4- (aq) + 2Na+ (aq) + 2OH- (aq) → 2H2O (l) + 2Na+ (aq) + SO42-(aq) 
C) SO42- (aq) + 2Na+ (aq) → 2Na+ (aq) + SO42-(aq) 
D) H+ (aq) + OH- (aq) → H2O( l) 
E) 2H+ (aq) + SO42- (aq) + 2Na+ (aq) + 2OH- (aq) → 2H2O (l) + 2Na+ (aq) + SO42- (aq)

Question 3

Oxidation is the ________ and reduction is the ________.

Accepted Answer

A) gain of oxygen, loss of electrons 
B) loss of oxygen, gain of electrons 
C) loss of electrons, gain of electrons 
D) gain of oxygen, loss of mass 
E) gain of electrons, loss of electrons 
A) gain of oxygen, loss of electrons 
B) loss of oxygen, gain of electrons 
C) loss of electrons, gain of electrons 
D) gain of oxygen, loss of mass 
E) gain of electrons, loss of electrons

Question 4

Which of the following is soluble in water at 25 °C?

Accepted Answer

A) AgNO3 
B) Hg2Cl2 
C) PbCl2 
D) Ag2S 
E) AgCl 
A) AgNO3 
B) Hg2Cl2 
C) PbCl2 
D) Ag2S 
E) AgCl

Question 5

Which compound has the atom with the highest oxidation number?

Accepted Answer

A) CaS 
B) Na3N 
C) MgSO3 
D) Al(NO2)3 
E) NH4Cl 
A) CaS 
B) Na3N 
C) MgSO3 
D) Al(NO2)3 
E) NH4Cl

Question 6

A 25.5 mL aliquot of HCl (aq)of unknown concentration was titrated with 0.113 M NaOH (aq). It took 51.2 mL of the base to reach the endpoint of the titration. The concentration (M)of the acid was ________.

Accepted Answer

A) 1.02 
B) 0.114 
C) 0.454 
D) 0.113 
E) 0.227 
A) 1.02 
B) 0.114 
C) 0.454 
D) 0.113 
E) 0.227

Question 7

What is the concentration (M)of 39.88 mL of an unknown NaOH solution if it required 46.08 mL of 0.6592 M HCl to neutralize?

Accepted Answer

A) 0.7617 
B) 2788 
C) 1211 
D) 1.313 
E) 1.211 
A) 0.7617 
B) 2788 
C) 1211 
D) 1.313 
E) 1.211

Question 8

What are the spectator ions in the reaction between KCl (aq)and AgNO3 (aq)?

Accepted Answer

A) K+ and Ag+ 
B) Ag+ and Cl- 
C) K+ and NO3- 
D) Ag+ and NO3- 
E) K+ only 
A) K+ and Ag+ 
B) Ag+ and Cl- 
C) K+ and NO3- 
D) Ag+ and NO3- 
E) K+ only

Question 9

The concentration (M)of an aqueous methanol produced when 0.200 L of a 2.00 M solution was diluted to 0.800 L is ________.

Accepted Answer

A) 0.800 
B) 0.200 
C) 0.500 
D) 0.400 
E) 8.00 
A) 0.800 
B) 0.200 
C) 0.500 
D) 0.400 
E) 8.00

Question 10

Which one of the following compounds is insoluble in water?

Accepted Answer

A) K2SO4 
B) Ca(C2H3O2)2 
C) MgC2O4 
D) ZnCl2 
E) Mn(NO3)2 
A) K2SO4 
B) Ca(C2H3O2)2 
C) MgC2O4 
D) ZnCl2 
E) Mn(NO3)2

Question 11

Of the following elements, ________ is the only one that cannot be found in nature in its elemental form. Cu
Hg
Au
Ag
Na

Accepted Answer

A) Cu 
B) Hg 
C) Au 
D) Ag 
E) Na 
A) Cu 
B) Hg 
C) Au 
D) Ag 
E) Na

Question 12

What volume (L)of 0.250 M HNO3 is required to neutralize a solution prepared by dissolving 17.5 g of NaOH in 350 mL of water?

Accepted Answer

A) 50.0 
B) 0.44 
C) 1.75 
D) 0.070 
E) 1.75 ×   
A) 50.0 
B) 0.44 
C) 1.75 
D) 0.070 
E) 1.75 ×

Question 13

What are the respective concentrations (M)of Na+ and SO42- afforded by dissolving 0.500 mol Na2SO4 in water and diluting to 1.33 L?

Accepted Answer

A) 0.665 and 0.665 
B) 0.665 and 1.33 
C) 1.33 and 0.665 
D) 0.376 and 0.752 
E) 0.752 and 0.376 
A) 0.665 and 0.665 
B) 0.665 and 1.33 
C) 1.33 and 0.665 
D) 0.376 and 0.752 
E) 0.752 and 0.376

Question 14

Combining aqueous solutions of BaI2 and Na2SO4  affords a precipitate of BaSO4. Which ions are spectator ions in the reaction?

Accepted Answer

A) Ba2+ only 
B) Na+ only 
C) Ba2+ and SO42- 
D) Na+ and I- 
E) SO42- and I- 
A) Ba2+ only 
B) Na+ only 
C) Ba2+ and SO42- 
D) Na+ and I- 
E) SO42- and I-

Question 15

A solution is prepared by adding 1.50 g of solid NaCl to 50.0 mL of 0.100 M CaCl2. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 mL.

Accepted Answer

A) 0.713 
B) 0.613 
C) 0.130 
D) 0.230 
E) 0.513 
A) 0.713 
B) 0.613 
C) 0.130 
D) 0.230 
E) 0.513

Question 16

How many grams of NaOH (MW = 40.0)are there in 375.0 mL of a 0.325 M NaOH solution?

Accepted Answer

The answer of How many grams of NaOH (MW =...

Question 17

Zinc is more active than cobalt and iron but less active than aluminum. Cobalt is more active than nickel but less active than iron. Which of the following correctly lists the elements in order of increasing activity?

Accepted Answer

A) Co < Ni < Fe < Zn < Al 
B) Ni < Fe < Co < Zn < Al 
C) Ni < Co < Fe < Zn < Al 
D) Fe < Ni < Co < Al < Zn 
E) Zn < Al < Co < Ni < Fe 
A) Co < Ni < Fe < Zn < Al 
B) Ni < Fe < Co < Zn < Al 
C) Ni < Co < Fe < Zn < Al 
D) Fe < Ni < Co < Al < Zn 
E) Zn < Al < Co < Ni < Fe

Question 18

The compound NH4Cl is a weak acid.

Accepted Answer

A) True 
 B)False

Question 19

A strong electrolyte is one that ________ completely in solution.

Accepted Answer

A) reacts 
B) associates 
C) disappears 
D) ionizes 
A) reacts 
B) associates 
C) disappears 
D) ionizes

Question 20

Aqueous solutions of a compound did not form precipitates with Cl-, Br-, I-, SO42-, CO32-, PO43-, OH-, or S2-. This highly water-soluble compound produced the foul-smelling gas H2S when the solution was acidified. This compound is ________.

Accepted Answer

A) Pb(NO3)2 
B) (NH4)2S 
C) KBr 
D) Li2CO3 
E) AgNO3 
A) Pb(NO3)2 
B) (NH4)2S 
C) KBr 
D) Li2CO3 
E) AgNO3

Exam 4: Aqueous Reactions and Solution Stoichiometry

What are the spectator ions in the reaction between KOH (aq)and HNO3 (aq)?

The net ionic equation for the reaction between aqueous sulfuric acid and aqueous sodium hydroxide is ________.

Oxidation is the ________ and reduction is the ________.

Which of the following is soluble in water at 25 °C?

Which compound has the atom with the highest oxidation number?

A 25.5 mL aliquot of HCl (aq)of unknown concentration was titrated with 0.113 M NaOH (aq). It took 51.2 mL of the base to reach the endpoint of the titration. The concentration (M)of the acid was ________.

What is the concentration (M)of 39.88 mL of an unknown NaOH solution if it required 46.08 mL of 0.6592 M HCl to neutralize?

What are the spectator ions in the reaction between KCl (aq)and AgNO3 (aq)?

The concentration (M)of an aqueous methanol produced when 0.200 L of a 2.00 M solution was diluted to 0.800 L is ________.

Which one of the following compounds is insoluble in water?

Of the following elements, ________ is the only one that cannot be found in nature in its elemental form. Cu Hg Au Ag Na

What volume (L)of 0.250 M HNO3 is required to neutralize a solution prepared by dissolving 17.5 g of NaOH in 350 mL of water?

What are the respective concentrations (M)of Na+ and SO42- afforded by dissolving 0.500 mol Na2SO4 in water and diluting to 1.33 L?

Combining aqueous solutions of BaI2 and Na2SO4 affords a precipitate of BaSO4. Which ions are spectator ions in the reaction?

A solution is prepared by adding 1.50 g of solid NaCl to 50.0 mL of 0.100 M CaCl2. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 mL.

How many grams of NaOH (MW = 40.0)are there in 375.0 mL of a 0.325 M NaOH solution?

Zinc is more active than cobalt and iron but less active than aluminum. Cobalt is more active than nickel but less active than iron. Which of the following correctly lists the elements in order of increasing activity?

The compound NH4Cl is a weak acid.

A strong electrolyte is one that ________ completely in solution.

Aqueous solutions of a compound did not form precipitates with Cl-, Br-, I-, SO42-, CO32-, PO43-, OH-, or S2-. This highly water-soluble compound produced the foul-smelling gas H2S when the solution was acidified. This compound is ________.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

What are the spectator ions in the reaction between KOH (aq)and HNO₃(aq)?

Oxidation is the and reduction is the .

What are the spectator ions in the reaction between KCl (aq)and AgNO₃(aq)?

What volume (L)of 0.250 M HNO₃is required to neutralize a solution prepared by dissolving 17.5 g of NaOH in 350 mL of water?

What are the respective concentrations (M)of Na⁺ and SO₄^2-afforded by dissolving 0.500 mol Na₂SO₄in water and diluting to 1.33 L?

Combining aqueous solutions of BaI₂ and Na₂SO₄ affords a precipitate of BaSO₄. Which ions are spectator ions in the reaction?

A solution is prepared by adding 1.50 g of solid NaCl to 50.0 mL of 0.100 M CaCl₂. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 mL.

The compound NH₄Cl is a weak acid.

Aqueous solutions of a compound did not form precipitates with Cl^-, Br^-, I^-, SO₄^2-, CO₃^2-, PO₄^3-, OH^-, or S^2-. This highly water-soluble compound produced the foul-smelling gas H₂S when the solution was acidified. This compound is ________.