Question 1

A weak electrolyte exists predominantly as ________ in solution.

Accepted Answer

A) atoms 
B) ions 
C) molecules 
D) electrons 
E) an isotope 
A) atoms 
B) ions 
C) molecules 
D) electrons 
E) an isotope

Question 2

How much CaF2 (g)is formed when   of   KF reacts with an excess of aqueous calcium bicarbonate?

Accepted Answer

A) 0.750 
B) 750 
C) 0.123 
D) 0.375 
E) 2000 
A) 0.750 
B) 750 
C) 0.123 
D) 0.375 
E) 2000

Question 3

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) 9.81 
B) 6.37 × 10-5 
C) 0.218 
D) 0.102 
E) 0.633 
A) 9.81 
B) 6.37 × 10-5 
C) 0.218 
D) 0.102 
E) 0.633

Question 4

What is the concentration (M)of potassium ions in a solution made by diluting 40.0 mL of a 0.474 M solution of potassium sulfide to a total volume of 300 mL.

Accepted Answer

The answer of What is the concentration (M)of potassium ions...

Question 5

Based on the activity series,which one of the reactions below will occur?

Accepted Answer

A) Fe (s)+ ZnCl2 (aq)→ FeCl2 (aq)+ Zn (s) 
B) Mn (s)+ NiCl2 (aq)→ MnCl2 (aq)+ Ni (s) 
C) Pb (s)+ NiI2 (aq)→ PbI2 (aq)+ Ni (s) 
D) SnBr2 (aq)+ Cu (s)→ CuBr2 (aq)+ Sn (s) 
E) None of the reactions will occur. 
A) Fe (s)+ ZnCl2 (aq)→ FeCl2 (aq)+ Zn (s) 
B) Mn (s)+ NiCl2 (aq)→ MnCl2 (aq)+ Ni (s) 
C) Pb (s)+ NiI2 (aq)→ PbI2 (aq)+ Ni (s) 
D) SnBr2 (aq)+ Cu (s)→ CuBr2 (aq)+ Sn (s) 
E) None of the reactions will occur.

Question 6

How many grams of CH3OH must be added to water to prepare 150 mL of a solution that is 2.0 M CH3OH?

Accepted Answer

A) 0.0096 
B) 430 
C) 2.4 
D) 9.6 
E) 4.3 
A) 0.0096 
B) 430 
C) 2.4 
D) 9.6 
E) 4.3

Question 7

What is the concentration of chloride ions in a 0.349 M solution of sodium chloride?

Accepted Answer

A) 0.349 M 
B) 0.0349 M 
C) 0.0060 M 
D) 0.175 M 
E) 0.698 M 
A) 0.349 M 
B) 0.0349 M 
C) 0.0060 M 
D) 0.175 M 
E) 0.698 M

Question 8

Of the following elements,________ is the most difficult to oxidize. Cu
Hg
Au
Ag
Na

Accepted Answer

A) Cu, Hg, and Au 
B) Hg and Ag 
C) Au only 
D) Ag only 
E) Na only 
A) Cu, Hg, and Au 
B) Hg and Ag 
C) Au only 
D) Ag only 
E) Na only

Question 9

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 10

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

Accepted Answer

A) HBrO4 
B) NaBrO3 
C) Br- 
D) Br2 
E) HBr 
A) HBrO4 
B) NaBrO3 
C) Br- 
D) Br2 
E) HBr

Question 11

0.400 g of solid NaCl is added to 50 mL of a 0.100 M MgCl2 solution.Assuming the final volume does not change,what is the molarity of chloride ion in the final solution?

Accepted Answer

A) 0.237 
B) 0.108 
C) 0.208 
D) 0.337 
E) 0.137 
A) 0.237 
B) 0.108 
C) 0.208 
D) 0.337 
E) 0.137

Question 12

Of the metals below,which will dissolve in an aqueous solution containing nickel ion?
Aluminum
Chromium
Barium
Tin
Potassium

Accepted Answer

A) aluminum and chromium 
B) All will dissolve except for tin 
C) barium and potassium 
D) tin only 
E) potassium only 
A) aluminum and chromium 
B) All will dissolve except for tin 
C) barium and potassium 
D) tin only 
E) potassium only

Question 13

What are the respective concentrations (M)of K+ and CO32- afforded by dissolving 0.530 mol K2CO3 in water and diluting to 1.50 L?

Accepted Answer

A) 0.707 and 0.353 
B) 0.118 and 0.353 
C) 0.353 and 0.707 
D) 0.353 and 0.353 
E) 0.707 and 0.707 
A) 0.707 and 0.353 
B) 0.118 and 0.353 
C) 0.353 and 0.707 
D) 0.353 and 0.353 
E) 0.707 and 0.707

Question 14

What is the formula for phosphoric acid?

Accepted Answer

A) H3PO4 
B) H2PO4 
C) H4PO4 
D) H3PO3 
E) none of the above 
A) H3PO4 
B) H2PO4 
C) H4PO4 
D) H3PO3 
E) none of the above

Question 15

Calculate the number of grams of unknown solute (MW = 56.105 g/mol)in 250.0 mL of a 0.169 M solution.

Accepted Answer

A) 2.37 
B) 83.0 
C) 0.753 
D) 2.37 × 103 
E) 7.53 × 10-4 
A) 2.37 
B) 83.0 
C) 0.753 
D) 2.37 × 103 
E) 7.53 × 10-4

Question 16

What is the concentration (M)of a NaCl solution prepared by dissolving 9.3 g of NaCl in sufficient water to give 350 mL of solution?

Accepted Answer

A) 18 
B) 0.16 
C) 0.45 
D) 27 
E) 2.7 × 10-2 
A) 18 
B) 0.16 
C) 0.45 
D) 27 
E) 2.7 × 10-2

Question 17

All of the following are true concerning 2.00 L of 0.100 M solution of Ca3(PO4)2 except for ________.

Accepted Answer

A) This solution contains 0.200 mol of Ca3(PO4)2. 
B) 1.00 L of this solution is required to furnish 0.300 mol of Ca2+ ions. 
C) There are 6.02 × 1022 phosphorus atoms in 500.0 mL of this solution. 
D) This solution contains 0.800 mol of oxygen atoms. 
E) This solution contains 0.600 mol of Ca2+. 
A) This solution contains 0.200 mol of Ca3(PO4)2. 
B) 1.00 L of this solution is required to furnish 0.300 mol of Ca2+ ions. 
C) There are 6.02 × 1022 phosphorus atoms in 500.0 mL of this solution. 
D) This solution contains 0.800 mol of oxygen atoms. 
E) This solution contains 0.600 mol of Ca2+.

Question 18

The molarity (M)of an aqueous solution containing 85.1 g of sucrose (C12H22O11)in 128 mL of solution is ________.

Accepted Answer

A) 0.665 
B) 0.0019 
C) 0.249 
D) 665 
E) 1.94 
A) 0.665 
B) 0.0019 
C) 0.249 
D) 665 
E) 1.94

Question 19

What is the concentration of nitrate ions in a 0.343 M solution of lead (II)nitrate?

Accepted Answer

A) 0.686 M 
B) 0.172 M 
C) 1.03 M 
D) 0.0343 M 
E) 0.343 M 
A) 0.686 M 
B) 0.172 M 
C) 1.03 M 
D) 0.0343 M 
E) 0.343 M

Question 20

The molarity (M)of an aqueous solution containing 22.5 g of sucrose (C12H22O11)in 35.5 mL of solution is ________.

Accepted Answer

A) 0.0657 
B) 1.85 ×   
C) 1.85 
D) 2.33 
E) 0.634 
A) 0.0657 
B) 1.85 ×   
C) 1.85 
D) 2.33 
E) 0.634

Exam 4: Reactions in Aqueous Solution

A weak electrolyte exists predominantly as ________ in solution.

How much CaF2 (g)is formed when of KF reacts with an excess of aqueous calcium bicarbonate?

What is the concentration (M)of potassium ions in a solution made by diluting 40.0 mL of a 0.474 M solution of potassium sulfide to a total volume of 300 mL.

Based on the activity series,which one of the reactions below will occur?

How many grams of CH3OH must be added to water to prepare 150 mL of a solution that is 2.0 M CH3OH?

What is the concentration of chloride ions in a 0.349 M solution of sodium chloride?

Of the following elements,________ is the most difficult to oxidize. Cu Hg Au Ag Na

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

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

0.400 g of solid NaCl is added to 50 mL of a 0.100 M MgCl2 solution.Assuming the final volume does not change,what is the molarity of chloride ion in the final solution?

Of the metals below,which will dissolve in an aqueous solution containing nickel ion? Aluminum Chromium Barium Tin Potassium

What are the respective concentrations (M)of K+ and CO32- afforded by dissolving 0.530 mol K2CO3 in water and diluting to 1.50 L?

What is the formula for phosphoric acid?

Calculate the number of grams of unknown solute (MW = 56.105 g/mol)in 250.0 mL of a 0.169 M solution.

What is the concentration (M)of a NaCl solution prepared by dissolving 9.3 g of NaCl in sufficient water to give 350 mL of solution?

All of the following are true concerning 2.00 L of 0.100 M solution of Ca3(PO4)2 except for ________.

The molarity (M)of an aqueous solution containing 85.1 g of sucrose (C12H22O11)in 128 mL of solution is ________.

What is the concentration of nitrate ions in a 0.343 M solution of lead (II)nitrate?

The molarity (M)of an aqueous solution containing 22.5 g of sucrose (C12H22O11)in 35.5 mL of solution is ________.

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

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

How much CaF₂ (g)is formed when of KF reacts with an excess of aqueous calcium bicarbonate?

How many grams of CH₃OH must be added to water to prepare 150 mL of a solution that is 2.0 M CH₃OH?

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

0.400 g of solid NaCl is added to 50 mL of a 0.100 M MgCl₂ solution.Assuming the final volume does not change,what is the molarity of chloride ion in the final solution?

What are the respective concentrations (M)of K⁺ and CO₃^2- afforded by dissolving 0.530 mol K₂CO₃ in water and diluting to 1.50 L?

All of the following are true concerning 2.00 L of 0.100 M solution of Ca₃(PO₄)₂ except for ________.

The molarity (M)of an aqueous solution containing 85.1 g of sucrose (C₁₂H₂₂O₁₁)in 128 mL of solution is ________.

The molarity (M)of an aqueous solution containing 22.5 g of sucrose (C₁₂H₂₂O₁₁)in 35.5 mL of solution is ________.