Question 1

How many grams of sodium chloride are there in 550.0 mL of a 1.90 M aqueous solution of sodium chloride?

Accepted Answer

A) 61.1 
B) 1.05 
C) 30.5 
D) 6.11 × 104 
E) 122 
A) 61.1 
B) 1.05 
C) 30.5 
D) 6.11 × 104 
E) 122

Question 2

Silver ions can be precipitated from aqueous solutions by the addition of aqueous chloride: Ag+  (aq) + Cl- (aq) → AgCl (s)
Silver chloride is virtually insoluble in water so that the reaction appears to go to completion. How many grams of solid NaCl must be added to 25.0 mL of 0.149 M AgNO3 solution to completely precipitate the silver?

Accepted Answer

A) 3.73 × 10-3 
B) 6.37 × 10-5 
C) 0.218 
D) 0.0637 
E) 1.57 × 104 
A) 3.73 × 10-3 
B) 6.37 × 10-5 
C) 0.218 
D) 0.0637 
E) 1.57 × 104

Question 3

The net ionic equation for the dissolution of zinc metal in aqueous hydrobromic acid is ________.

Accepted Answer

A) Zn (s) + 2Br- (aq) → ZnBr2 (aq) 
B) Zn (s) + 2HBr (aq) → ZnBr2 (aq) + 2H+ (aq) 
C) Zn (s) + 2HBr (aq) → ZnBr2 (s) + 2H+ (aq) 
D) Zn (s) + 2H+ (aq) → Zn2+ (aq) + H2 (g) 
E) 2Zn (s) + H+ (aq) → 2Zn2+ (aq) + H2 (g) 
A) Zn (s) + 2Br- (aq) → ZnBr2 (aq) 
B) Zn (s) + 2HBr (aq) → ZnBr2 (aq) + 2H+ (aq) 
C) Zn (s) + 2HBr (aq) → ZnBr2 (s) + 2H+ (aq) 
D) Zn (s) + 2H+ (aq) → Zn2+ (aq) + H2 (g) 
E) 2Zn (s) + H+ (aq) → 2Zn2+ (aq) + H2 (g)

Question 4

In which reaction does the oxidation number of hydrogen change?

Accepted Answer

A) HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l) 
B) 2Na (s) + 2H2O (l) → 2NaOH (aq) + H2 (g) 
C) CaO (s) + H2O (l) → Ca(OH)2 (s) 
D) 2HClO4 (aq) + CaCO3 (s) → Ca(ClO4)2 (aq) + H2O (l) + CO2 (g) 
E) SO2 (g) + H2O (l) → H2SO3 (aq) 
A) HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l) 
B) 2Na (s) + 2H2O (l) → 2NaOH (aq) + H2 (g) 
C) CaO (s) + H2O (l) → Ca(OH)2 (s) 
D) 2HClO4 (aq) + CaCO3 (s) → Ca(ClO4)2 (aq) + H2O (l) + CO2 (g) 
E) SO2 (g) + H2O (l) → H2SO3 (aq)

Question 5

The balanced net ionic equation for precipitation of CaCO3 when aqueous solutions of Na2CO3 and CaCl2 are mixed is ________.

Accepted Answer

A) 2Na+ (aq) + CO32- (aq) → Na2CO3 (aq) 
B) 2Na+ (aq) + 2Cl- (aq) → 2NaCl (aq) 
C) Na+ (aq) + Cl- (aq) → NaCl (aq) 
D) Ca+(aq) + CO32- (aq) → CaCO3 (s) 
E) Na2CO3 (aq) + Ca   (aq) → 2NaCl (aq) + CaCO3 (s) 
A) 2Na+ (aq) + CO32- (aq) → Na2CO3 (aq) 
B) 2Na+ (aq) + 2Cl- (aq) → 2NaCl (aq) 
C) Na+ (aq) + Cl- (aq) → NaCl (aq) 
D) Ca+(aq) + CO32- (aq) → CaCO3 (s) 
E) Na2CO3 (aq) + Ca   (aq) → 2NaCl (aq) + CaCO3 (s)

Question 6

The spectator ions in the reaction between aqueous hydrochloric acid and aqueous ammonia are ________.

Accepted Answer

A) H+ and NH3 
B) H+, Cl-, NH3, and NH4+ 
C) Cl- and NH4+ 
D) H+, Cl-, and NH4+ 
E) Cl- only 
A) H+ and NH3 
B) H+, Cl-, NH3, and NH4+ 
C) Cl- and NH4+ 
D) H+, Cl-, and NH4+ 
E) Cl- only

Question 7

Calculate the concentration (M)of sodium ions in a solution made by diluting 50.0 mL of a 0.874 M solution of sodium sulfide to a total volume of 250 mL.

Accepted Answer

The answer of Calculate the concentration (M)of sodium ions in...

Question 8

Based on the equations below, which metal is the most active? Pb(NO3)2 (aq) + Ni (s) → Ni(NO3)2 (aq) + Pb (s)
Pb(NO3)2 (aq) + Ag (s) → No reaction
Cu(NO3)2 (aq) + Ni (s) → Ni(NO3)2 (aq) + Cu (s)

Accepted Answer

A) Ni 
B) Ag 
C) Cu 
D) Pb 
E) N 
A) Ni 
B) Ag 
C) Cu 
D) Pb 
E) N

Question 9

What are the respective concentrations (M)of K+ and PO43- afforded by dissolving 0.800 mol K3PO4 in water and diluting to 1.63 L?

Accepted Answer

A) 0.800 and 0.800 
B) 0.491 and 0.491 
C) 0.800 and 0.491 
D) 1.44 and 0.491 
E) 0.489 and 0.163 
A) 0.800 and 0.800 
B) 0.491 and 0.491 
C) 0.800 and 0.491 
D) 1.44 and 0.491 
E) 0.489 and 0.163

Question 10

Which combination will produce a precipitate?

Accepted Answer

A) NH4OH (aq)and HCl (aq) 
B) AgNO3 (aq)and Ca(C2H3O2)2 (aq) 
C) NaOH (aq)and HCl (aq) 
D) NaCl (aq)and HC2H3O2 (aq) 
E) NaOH (aq)and Fe(NO3)2 (aq) 
A) NH4OH (aq)and HCl (aq) 
B) AgNO3 (aq)and Ca(C2H3O2)2 (aq) 
C) NaOH (aq)and HCl (aq) 
D) NaCl (aq)and HC2H3O2 (aq) 
E) NaOH (aq)and Fe(NO3)2 (aq)

Question 11

In which species does chlorine have an oxidation number of zero?

Accepted Answer

A) Cl2 
B) HClO4 
C) NaClO3 
D) Cl- 
E) HCl 
A) Cl2 
B) HClO4 
C) NaClO3 
D) Cl- 
E) HCl

Question 12

Which hydroxides are weak bases?

Accepted Answer

A) KOH 
B) Ba(OH)2 
C) RbOH 
D) CsOH 
E) None of these choices are weak bases. 
A) KOH 
B) Ba(OH)2 
C) RbOH 
D) CsOH 
E) None of these choices are weak bases.

Question 13

What is the concentration (M)of KCl in a solution made by mixing 25.0 mL of 0.100 M KCl with 50.0 mL of 0.100 M KCl?

Accepted Answer

A) 0.100 
B) 0.0500 
C) 0.0333 
D) 0.0250 
E) 125 
A) 0.100 
B) 0.0500 
C) 0.0333 
D) 0.0250 
E) 125

Question 14

The net ionic equation for the reaction between aqueous solutions of HF and KOH is ________.

Accepted Answer

A) HF + KOH → H2O + K+ + F- 
B) HF + OH- → H2O + F- 
C) HF + K+ + OH- → H2O + KF 
D) H+ + OH- → H2O 
E) H+ + F- + K+  + OH- → H2O + K+ + F- 
A) HF + KOH → H2O + K+ + F- 
B) HF + OH- → H2O + F- 
C) HF + K+ + OH- → H2O + KF 
D) H+ + OH- → H2O 
E) H+ + F- + K+  + OH- → H2O + K+ + F-

Question 15

The spectator ions in the reaction between aqueous perchloric acid and aqueous barium hydroxide are ________.

Accepted Answer

A) OH- and ClO4- 
B) H+, OH- , ClO4-, and Ba2+ 
C) H+ and OH- 
D) H+ and Ba2+ 
E) ClO4- and Ba2+ 
A) OH- and ClO4- 
B) H+, OH- , ClO4-, and Ba2+ 
C) H+ and OH- 
D) H+ and Ba2+ 
E) ClO4- and Ba2+

Question 16

What volume (mL)of a concentrated solution of magnesium chloride (9.00 M)must be diluted to 350. mL to make a 2.75 M solution of magnesium chloride?

Accepted Answer

A) 2.75 
B) 50.0 
C) 45.0 
D) 107 
E) 350 
A) 2.75 
B) 50.0 
C) 45.0 
D) 107 
E) 350

Question 17

Which hydroxides are strong bases? Sr(OH)2
KOH
NaOH
Ba(OH)2

Accepted Answer

A) KOH, Ba(OH)2 
B) KOH, NaOH 
C) KOH, NaOH, Ba(OH)2 
D) Sr(OH)2, KOH, NaOH, Ba(OH)2 
E) None of these is a strong base. 
A) KOH, Ba(OH)2 
B) KOH, NaOH 
C) KOH, NaOH, Ba(OH)2 
D) Sr(OH)2, KOH, NaOH, Ba(OH)2 
E) None of these is a strong base.

Question 18

The net ionic equation for formation of an aqueous solution of Al(NO3)3 via mixing solid Al(OH)3 and aqueous nitric acid is ________.

Accepted Answer

A) Al(OH)3 (s) + 3HNO3 (aq) → 3H2O (l) + Al(NO3)3 (aq) 
B) Al(OH)3 (s) + 3NO3- (aq) → 3OH- (aq) + Al(NO3)3 (aq) 
C) Al(OH)3 (s) + 3NO3- (aq) → 3OH- (aq) + Al(NO3)3 (s) 
D) Al(OH)3 (s) + 3H+ (aq) → 3H2O (l) + Al3+ (aq) 
E) Al(OH)3 (s) + 3HNO3 (aq) → 3H2O (l) + Al3+ (aq) + NO3- (aq) 
A) Al(OH)3 (s) + 3HNO3 (aq) → 3H2O (l) + Al(NO3)3 (aq) 
B) Al(OH)3 (s) + 3NO3- (aq) → 3OH- (aq) + Al(NO3)3 (aq) 
C) Al(OH)3 (s) + 3NO3- (aq) → 3OH- (aq) + Al(NO3)3 (s) 
D) Al(OH)3 (s) + 3H+ (aq) → 3H2O (l) + Al3+ (aq) 
E) Al(OH)3 (s) + 3HNO3 (aq) → 3H2O (l) + Al3+ (aq) + NO3- (aq)

Question 19

Which of the following are strong electrolytes? HCl
HC2H3O2
NH3
KCl

Accepted Answer

A) HCl, KCl 
B) HCl, NH3, KCl 
C) HCl, HC2H3O2, NH3, KCl 
D) HCl, HC2H3O2, KCl 
E) HC2H3O2, KCl 
A) HCl, KCl 
B) HCl, NH3, KCl 
C) HCl, HC2H3O2, NH3, KCl 
D) HCl, HC2H3O2, KCl 
E) HC2H3O2, KCl

Question 20

Which of these metals is the most easily oxidized? Na
Au
Fe
Ca
Ag

Accepted Answer

A) Na 
B) Au 
C) Fe 
D) Ca 
E) Ag 
A) Na 
B) Au 
C) Fe 
D) Ca 
E) Ag

Exam 4: Aqueous Reactions and Solution Stoichiometry

How many grams of sodium chloride are there in 550.0 mL of a 1.90 M aqueous solution of sodium chloride?

The net ionic equation for the dissolution of zinc metal in aqueous hydrobromic acid is ________.

In which reaction does the oxidation number of hydrogen change?

The balanced net ionic equation for precipitation of CaCO3 when aqueous solutions of Na2CO3 and CaCl2 are mixed is ________.

The spectator ions in the reaction between aqueous hydrochloric acid and aqueous ammonia are ________.

Calculate the concentration (M)of sodium ions in a solution made by diluting 50.0 mL of a 0.874 M solution of sodium sulfide to a total volume of 250 mL.

Based on the equations below, which metal is the most active? Pb(NO3)2 (aq) + Ni (s) → Ni(NO3)2 (aq) + Pb (s) Pb(NO3)2 (aq) + Ag (s) → No reaction Cu(NO3)2 (aq) + Ni (s) → Ni(NO3)2 (aq) + Cu (s)

What are the respective concentrations (M)of K+ and PO43- afforded by dissolving 0.800 mol K3PO4 in water and diluting to 1.63 L?

Which combination will produce a precipitate?

In which species does chlorine have an oxidation number of zero?

Which hydroxides are weak bases?

What is the concentration (M)of KCl in a solution made by mixing 25.0 mL of 0.100 M KCl with 50.0 mL of 0.100 M KCl?

The net ionic equation for the reaction between aqueous solutions of HF and KOH is ________.

The spectator ions in the reaction between aqueous perchloric acid and aqueous barium hydroxide are ________.

What volume (mL)of a concentrated solution of magnesium chloride (9.00 M)must be diluted to 350. mL to make a 2.75 M solution of magnesium chloride?

Which hydroxides are strong bases? Sr(OH)2 KOH NaOH Ba(OH)2

The net ionic equation for formation of an aqueous solution of Al(NO3)3 via mixing solid Al(OH)3 and aqueous nitric acid is ________.

Which of the following are strong electrolytes? HCl HC2H3O2 NH3 KCl

Which of these metals is the most easily oxidized? Na Au Fe Ca Ag

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

The balanced net ionic equation for precipitation of CaCO₃ when aqueous solutions of Na₂CO₃ and CaCl₂ are mixed is ________.

Based on the equations below, which metal is the most active? Pb(NO₃)₂ (aq) + Ni (s) → Ni(NO₃)₂ (aq) + Pb (s) Pb(NO₃)₂ (aq) + Ag (s) → No reaction Cu(NO₃)₂ (aq) + Ni (s) → Ni(NO₃)₂ (aq) + Cu (s)

What are the respective concentrations (M)of K⁺ and PO₄^3- afforded by dissolving 0.800 mol K₃PO₄ in water and diluting to 1.63 L?

Which hydroxides are strong bases? Sr(OH)₂ KOH NaOH Ba(OH)₂

The net ionic equation for formation of an aqueous solution of Al(NO₃)₃ via mixing solid Al(OH)₃ and aqueous nitric acid is ________.

Which of the following are strong electrolytes? HCl HC₂H₃O₂ NH₃ KCl