Question 1

Calculate the number of grams of solute in 500.0 mL of 0.189 M KOH.

Accepted Answer

A) 148 
B) 1.68 
C) 5.30 × 103 
D) 5.30 
E) 1.68 × 10-3 
A) 148 
B) 1.68 
C) 5.30 × 103 
D) 5.30 
E) 1.68 × 10-3

Question 2

The balanced reaction between aqueous potassium hydroxide and aqueous acetic acid is __________.

Accepted Answer

A) KOH (aq)+ HC2H3O2 (aq)→ OH- (l)+ H C2H3O2+ (aq)+ K (s) 
B) KOH (aq)+ HC2H3O2 (aq)→ H2O (l)+ KC2H3O2 ( aq) 
C) KOH (aq)+ HC2H3O2 (aq)→ H2C2H3O3 (aq)+ K (s) 
D) KOH (aq)+ HC2H3O2 (aq)→ KC2H3O3 (aq)+ H2 (g) 
E) KOH (aq)+ HC2H3O2 (aq)→ H2KC2H3O (aq)+ O2 (g) 
A) KOH (aq)+ HC2H3O2 (aq)→ OH- (l)+ H C2H3O2+ (aq)+ K (s) 
B) KOH (aq)+ HC2H3O2 (aq)→ H2O (l)+ KC2H3O2 ( aq) 
C) KOH (aq)+ HC2H3O2 (aq)→ H2C2H3O3 (aq)+ K (s) 
D) KOH (aq)+ HC2H3O2 (aq)→ KC2H3O3 (aq)+ H2 (g) 
E) KOH (aq)+ HC2H3O2 (aq)→ H2KC2H3O (aq)+ O2 (g)

Question 3

You are given two clear solutions of the same unknown monoprotic acid, but with different concentrations. Which statement is true?

Accepted Answer

A) There is no chemical method designed to tell the two solutions apart. 
B) It would take more base solution (per milliliter of the unknown solution)to neutralize the more concentrated solution. 
C) A smaller volume of the less concentrated solution contains the same number of moles of the acid compared to the more concentrated solution. 
D) If the same volume of each sample was taken, then more base solution would be required to neutralize the one with lower concentration. 
E) The product of concentration and volume of the less concentrated solution equals the product of concentration and volume of the more concentrated solution. 
A) There is no chemical method designed to tell the two solutions apart. 
B) It would take more base solution (per milliliter of the unknown solution)to neutralize the more concentrated solution. 
C) A smaller volume of the less concentrated solution contains the same number of moles of the acid compared to the more concentrated solution. 
D) If the same volume of each sample was taken, then more base solution would be required to neutralize the one with lower concentration. 
E) The product of concentration and volume of the less concentrated solution equals the product of concentration and volume of the more concentrated solution.

Question 4

Of the species below, only __________ is not an electrolyte.

Accepted Answer

A) HCl 
B) Rb2SO4 
C) Ar 
D) KOH 
E) NaCl 
A) HCl 
B) Rb2SO4 
C) Ar 
D) KOH 
E) NaCl

Question 5

The spectator ions in the reaction between aqueous hydrofluoric acid and aqueous barium hydroxide are __________.

Accepted Answer

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

Question 6

Which of the following is an oxidation-reduction reaction?

Accepted Answer

A) Cu (s)+ 2AgNO3 (aq)→ 2Ag (s)+ Cu(NO3)2 (aq) 
B) HCl (aq)+ NaOH (aq)→ H2O (l)+ NaCl (aq) 
C) AgNO3 (aq)+ HCl (aq)→ AgCl (s)+ HNO3 (aq) 
D) Ba(C2H3O2)2 (aq)+ Na2SO4 (aq)→ BaSO4 (s)+ 2NaC2H3O2 (aq) 
E) H2CO3 (aq)+ Ca(NO3)2 (aq)→ 2HNO3 (aq)+ CaCO3 (s) 
A) Cu (s)+ 2AgNO3 (aq)→ 2Ag (s)+ Cu(NO3)2 (aq) 
B) HCl (aq)+ NaOH (aq)→ H2O (l)+ NaCl (aq) 
C) AgNO3 (aq)+ HCl (aq)→ AgCl (s)+ HNO3 (aq) 
D) Ba(C2H3O2)2 (aq)+ Na2SO4 (aq)→ BaSO4 (s)+ 2NaC2H3O2 (aq) 
E) H2CO3 (aq)+ Ca(NO3)2 (aq)→ 2HNO3 (aq)+ CaCO3 (s)

Question 7

The concentration of sulfate ions in a 0.233 M solution of sulfuric acid is __________.

Accepted Answer

A) 0.699 M 
B) 0.233 M 
C) 0.466 M 
D) 0.0777 M 
E) 0.155 M 
A) 0.699 M 
B) 0.233 M 
C) 0.466 M 
D) 0.0777 M 
E) 0.155 M

Question 8

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 9

Which one of the following compounds is insoluble in water?

Accepted Answer

A) Na2CO3 
B) K2SO4 
C) Fe(NO3)3 
D) ZnS 
E) AgNO3 
A) Na2CO3 
B) K2SO4 
C) Fe(NO3)3 
D) ZnS 
E) AgNO3

Question 10

A tenfold dilution of a sample solution can be obtained by taking __________.

Accepted Answer

A) 1 part sample and 9 parts solvent 
B) 1 part sample and 10 parts solvent 
C) 9 parts sample and 1 part solvent 
D) 10 parts sample and 1 part solvent 
E) 99 parts sample and 1 part solvent 
A) 1 part sample and 9 parts solvent 
B) 1 part sample and 10 parts solvent 
C) 9 parts sample and 1 part solvent 
D) 10 parts sample and 1 part solvent 
E) 99 parts sample and 1 part solvent

Question 11

Of the following elements, __________ is the most easily oxidized. oxygen
Fluorine
Nitrogen
Aluminum
Gold

Accepted Answer

A) oxygen 
B) fluorine 
C) nitrogen 
D) aluminum 
E) gold 
A) oxygen 
B) fluorine 
C) nitrogen 
D) aluminum 
E) gold

Question 12

Which of the following are strong acids? HI
HNO3
HF
HBr

Accepted Answer

A) HF, HBr 
B) HI, HNO3, HF, HBr 
C) HI, HF, HBr 
D) HNO3, HF, HBr 
E) HI, HNO3, HBr 
A) HF, HBr 
B) HI, HNO3, HF, HBr 
C) HI, HF, HBr 
D) HNO3, HF, HBr 
E) HI, HNO3, HBr

Question 13

Lead ions can be precipitated from aqueous solutions by the addition of aqueous iodide: Pb2+ (aq)+ 2I- (aq)→ PbI2 (s)
Lead iodide is virtually insoluble in water so that the reaction appears to go to completion. How many milliliters of 3.550 M HI(aq)must be added to a solution containing 0.700 mol of Pb(NO)3)2 (aq)to completely precipitate the lead?

Accepted Answer

A) 2.54 × 10-3 
B) 394 
C) 197 
D) 0.197 
E) 0.394 
A) 2.54 × 10-3 
B) 394 
C) 197 
D) 0.197 
E) 0.394

Question 14

Which combination will produce a precipitate?

Accepted Answer

A) Pb(NO3)2 (aq)and HCl (aq) 
B) Cu(NO3)2 (aq)and KC2H3O2 (aq) 
C) KOH (aq)and HNO3 (aq) 
D) AgC2H3O2 (aq)and HC2H3O2 (aq) 
E) NaOH (aq)and Sr(NO3)2 (aq) 
A) Pb(NO3)2 (aq)and HCl (aq) 
B) Cu(NO3)2 (aq)and KC2H3O2 (aq) 
C) KOH (aq)and HNO3 (aq) 
D) AgC2H3O2 (aq)and HC2H3O2 (aq) 
E) NaOH (aq)and Sr(NO3)2 (aq)

Question 15

Oxidation and __________ mean essentially the same thing.

Accepted Answer

A) activity 
B) reduction 
C) metathesis 
D) decomposition 
E) corrosion 
A) activity 
B) reduction 
C) metathesis 
D) decomposition 
E) corrosion

Question 16

Which one of the following is a diprotic acid?

Accepted Answer

A) nitric acid 
B) chloric acid 
C) phosphoric acid 
D) hydrofluoric acid 
E) sulfuric acid 
A) nitric acid 
B) chloric acid 
C) phosphoric acid 
D) hydrofluoric acid 
E) sulfuric acid

Question 17

Which solution has the same number of moles of KCl as 75.00 mL of 0.250M solution of KCl?

Accepted Answer

A) 20.0 mL of 0.200M solution of KCl 
B) 25.0 mL of 0.175M solution of KCl 
C) 129 mL of 0.145M solution of KCl 
D) 50.0 mL of 0.125M solution of KCl 
E) 100 mL of 0.0500M solution of KCl 
A) 20.0 mL of 0.200M solution of KCl 
B) 25.0 mL of 0.175M solution of KCl 
C) 129 mL of 0.145M solution of KCl 
D) 50.0 mL of 0.125M solution of KCl 
E) 100 mL of 0.0500M solution of KCl

Question 18

The molarity of a solution prepared by diluting 43.72 mL of 1.005 M aqueous K2Cr2O7 to 500. mL is __________.

Accepted Answer

A) 0.0879 
B) 87.9 
C) 0.0218 
D) 0.0115 
E) 0.870 
A) 0.0879 
B) 87.9 
C) 0.0218 
D) 0.0115 
E) 0.870

Question 19

A stock solution of HNO3 is prepared and found to contain 13.5 M of HNO3. If 25.0 mL of the stock solution is diluted to a final volume of 0.500 L, the concentration of the diluted solution is __________ M.

Accepted Answer

A) 0.270 
B) 1.48 
C) 0.675 
D) 675 
E) 270 
A) 0.270 
B) 1.48 
C) 0.675 
D) 675 
E) 270

Question 20

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

Accepted Answer

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

Exam 4: Aqueous Reactions and Solution Stoichiometry

Calculate the number of grams of solute in 500.0 mL of 0.189 M KOH.

The balanced reaction between aqueous potassium hydroxide and aqueous acetic acid is __________.

You are given two clear solutions of the same unknown monoprotic acid, but with different concentrations. Which statement is true?

Of the species below, only __________ is not an electrolyte.

The spectator ions in the reaction between aqueous hydrofluoric acid and aqueous barium hydroxide are __________.

Which of the following is an oxidation-reduction reaction?

The concentration of sulfate ions in a 0.233 M solution of sulfuric acid is __________.

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

Which one of the following compounds is insoluble in water?

A tenfold dilution of a sample solution can be obtained by taking __________.

Of the following elements, __________ is the most easily oxidized. oxygen Fluorine Nitrogen Aluminum Gold

Which of the following are strong acids? HI HNO3 HF HBr

Which combination will produce a precipitate?

Oxidation and __________ mean essentially the same thing.

Which one of the following is a diprotic acid?

Which solution has the same number of moles of KCl as 75.00 mL of 0.250M solution of KCl?

The molarity of a solution prepared by diluting 43.72 mL of 1.005 M aqueous K2Cr2O7 to 500. mL is __________.

A stock solution of HNO3 is prepared and found to contain 13.5 M of HNO3. If 25.0 mL of the stock solution is diluted to a final volume of 0.500 L, the concentration of the diluted solution is __________ M.

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

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

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

Which of the following are strong acids? HI HNO₃ HF HBr

The molarity of a solution prepared by diluting 43.72 mL of 1.005 M aqueous K₂Cr₂O₇ to 500. mL is __________.

A stock solution of HNO₃ is prepared and found to contain 13.5 M of HNO₃. If 25.0 mL of the stock solution is diluted to a final volume of 0.500 L, the concentration of the diluted solution is __________ M.

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