Question 1

A sample contains Ba3(PO4)2, CdS,AgCl,NH4Cl,and ZnS.Identify the precipitate after the addition of 6 M HCl; H2S and 0.2 M HCl; and OH- to a pH of 8.

Accepted Answer

A)  Ba3(PO4)2 
B)  CdS 
C)  AgCl 
D)  NH4Cl 
E)  FeS 
A)  Ba3(PO4)2 
B)  CdS 
C)  AgCl 
D)  NH4Cl 
E)  FeS

Question 2

Determine the solubility for CuC2O4(s)in pure water.Ksp for is 2.9 × 10-8.

Accepted Answer

A)  0.0036 g L-1 
B)  0.069 g L-1 
C)  0.026 g L-1 
D)  0.18 g L-1 
E)  0.0083 g L-1 
A)  0.0036 g L-1 
B)  0.069 g L-1 
C)  0.026 g L-1 
D)  0.18 g L-1 
E)  0.0083 g L-1

Question 3

Which of the following compounds will have the highest molar solubility in pure water?

Accepted Answer

A)  SnS, Ksp = 1.0 × 10-26 
B)  CuS, Ksp = 1.27 × 10-36 
C)  Fe(OH)3, Ksp = 2.79 × 10-39 
D)  ZnS, Ksp = 2.0 × 10-25 
E)  Ag2S, Ksp = 6.0 × 10-51 
A)  SnS, Ksp = 1.0 × 10-26 
B)  CuS, Ksp = 1.27 × 10-36 
C)  Fe(OH)3, Ksp = 2.79 × 10-39 
D)  ZnS, Ksp = 2.0 × 10-25 
E)  Ag2S, Ksp = 6.0 × 10-51

Question 4

How many milliliters of 0.0839 M NaOH are required to titrate 25.0 mL of   to the equivalence point?

Accepted Answer

A)  29.5 mL 
B)  0.332 mL 
C)  4.57 mL 
D)  0.208 mL 
E)  21.2 mL 
A)  29.5 mL 
B)  0.332 mL 
C)  4.57 mL 
D)  0.208 mL 
E)  21.2 mL

Question 5

Identify the compound that is in stalactites and stalagmites.

Accepted Answer

The answer of Identify the compound that is in stalactites...

Question 6

A buffer solution is 0.100 M in both HC7H5O2 and NaC7H5O2 and has a pH of 4.19.Which of the following pH values would you expect from the addition of a small amount of a dilute solution of a strong base?

Accepted Answer

A)  3.89 
B)  3.69 
C)  5.69 
D)  4.49 
E)  There is not enough information to determine. 
A)  3.89 
B)  3.69 
C)  5.69 
D)  4.49 
E)  There is not enough information to determine.

Question 7

The highest pH for an effective buffer occurs when the base is how many times as concentrated as the acid?

Accepted Answer

A)  4 
B)  5 
C)  10 
D)  15 
E)  40 
A)  4 
B)  5 
C)  10 
D)  15 
E)  40

Question 8

What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 60.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.Ka = 1.8 × 10-5 for CH3CO2H.

Accepted Answer

A)  8.26 
B)  9.26 
C)  11.13 
D)  12.52 
A)  8.26 
B)  9.26 
C)  11.13 
D)  12.52

A sample contains Ba₃(PO₄)₂,CdS,AgCl,NH₄Cl,and ZnS.Identify the precipitate after the addition of 6 M HCl; H₂S and 0.2 M HCl; and OH^- to a pH of 8.

Determine the solubility for CuC₂O₄(s)in pure water.K_sp for is 2.9 × 10^-8.

Which of the following compounds will have the highest molar solubility in pure water?

How many milliliters of 0.0839 M NaOH are required to titrate 25.0 mL of to the equivalence point?

Identify the compound that is in stalactites and stalagmites.

A buffer solution is 0.100 M in both HC₇H₅O₂ and NaC₇H₅O₂ and has a pH of 4.19.Which of the following pH values would you expect from the addition of a small amount of a dilute solution of a strong base?

The highest pH for an effective buffer occurs when the base is how many times as concentrated as the acid?

What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 60.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.K_a = 1.8 × 10^-5for CH₃CO₂H.

Essentials: Units, Measurements, and Problem Solving

Atoms

The Quantum Mechanical Model of the Atom

Periodic Properties of the Elements

Molecules and Compounds

Chemical Bonding I

Chemical Bonding Ii

Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

Thermochemistry

Gases

Liquids, Solids, and Intermolecular Forces

Crystalline Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Transition Metals and Coordination Compounds

Filters

Exam 18: Aqueous Ionic Equilibrium

A sample contains Ba3(PO4)2, CdS,AgCl,NH4Cl,and ZnS.Identify the precipitate after the addition of 6 M HCl; H2S and 0.2 M HCl; and OH- to a pH of 8.

Determine the solubility for CuC2O4(s)in pure water.Ksp for is 2.9 × 10-8.

Which of the following compounds will have the highest molar solubility in pure water?

How many milliliters of 0.0839 M NaOH are required to titrate 25.0 mL of to the equivalence point?

Identify the compound that is in stalactites and stalagmites.

A buffer solution is 0.100 M in both HC7H5O2 and NaC7H5O2 and has a pH of 4.19.Which of the following pH values would you expect from the addition of a small amount of a dilute solution of a strong base?

The highest pH for an effective buffer occurs when the base is how many times as concentrated as the acid?

What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 60.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.Ka = 1.8 × 10-5 for CH3CO2H.

Essentials: Units, Measurements, and Problem Solving

Atoms

The Quantum Mechanical Model of the Atom

Periodic Properties of the Elements

Molecules and Compounds

Chemical Bonding I

Chemical Bonding Ii

Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

Thermochemistry

Gases

Liquids, Solids, and Intermolecular Forces

Crystalline Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Transition Metals and Coordination Compounds

Filters

A sample contains Ba₃(PO₄)₂,CdS,AgCl,NH₄Cl,and ZnS.Identify the precipitate after the addition of 6 M HCl; H₂S and 0.2 M HCl; and OH^- to a pH of 8.

Determine the solubility for CuC₂O₄(s)in pure water.K_sp for is 2.9 × 10^-8.

A buffer solution is 0.100 M in both HC₇H₅O₂ and NaC₇H₅O₂ and has a pH of 4.19.Which of the following pH values would you expect from the addition of a small amount of a dilute solution of a strong base?

What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 60.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.K_a = 1.8 × 10^-5for CH₃CO₂H.