Question 1

Select the classification for the following reaction. NH3(aq) + HNO3(aq) → NH4NO3(aq)

Accepted Answer

A) Precipitation 
B) Acid-base 
C) Redox 
D) Decomposition 
E) None of these choices are correct. 
A) Precipitation 
B) Acid-base 
C) Redox 
D) Decomposition 
E) None of these choices are correct. B

Question 2

In an acid-base (neutralization) reaction the equivalence point is the point where the indicator changes color.

Accepted Answer

A) True 
 B)False  False

Question 3

Predict the products by completing a balanced equation for the following decomposition reaction. CaCl2(l)   ?

Accepted Answer

A) CaCl 2( l)   Ca( l)+ 2Cl -( l) 
B) CaCl 2( l)   Ca 2+( l)+ Cl 2( g) 
C) CaCl 2( l)   Ca 2+( l)+ 2Cl -( l) 
D) CaCl 2( l)   Ca( l)+ Cl 2( g) 
E) CaCl 2( l)   CaCl( l)+ Cl -( l) 
A) CaCl 2( l)   Ca( l)+ 2Cl -( l) 
B) CaCl 2( l)   Ca 2+( l)+ Cl 2( g) 
C) CaCl 2( l)   Ca 2+( l)+ 2Cl -( l) 
D) CaCl 2( l)   Ca( l)+ Cl 2( g) 
E) CaCl 2( l)   CaCl( l)+ Cl -( l) D

Question 4

Predict the product(s) for the following reaction. MgCO3(s)

Accepted Answer

A) MgO 2( s)+ CO( g) 
B) MgO( s)+ CO 2 
C) Mg( s)+ CO 2( g)+ O 2( g) 
D) Mg 2+( s)+ CO 2( g)+ O 2( g) 
E) No reaction occurs. 
A) MgO 2( s)+ CO( g) 
B) MgO( s)+ CO 2 
C) Mg( s)+ CO 2( g)+ O 2( g) 
D) Mg 2+( s)+ CO 2( g)+ O 2( g) 
E) No reaction occurs.

Question 5

Which one of the following ionic compounds is soluble in water?

Accepted Answer

A) Na 2S 
B) PbI 2 
C) AgCl 
D) CuS 
E) Ca 3(PO 4)2 
A) Na 2S 
B) PbI 2 
C) AgCl 
D) CuS 
E) Ca 3(PO 4)2

Question 6

Reduction is the loss of electrons.

Accepted Answer

A) True 
 B)False

Question 7

Select the classification for the following reaction. BaCl2(aq) + K2SO4(aq) → BaSO4(s) + 2KCl(aq)

Accepted Answer

A) Precipitation 
B) Acid-base 
C) Redox 
D) Decomposition 
E) None of these choices are correct. 
A) Precipitation 
B) Acid-base 
C) Redox 
D) Decomposition 
E) None of these choices are correct.

Question 8

Select the classification for the following reaction. Fe2+(aq) + 2OH-(aq) → Fe(OH)2(s)

Accepted Answer

A) Precipitation 
B) Acid-base 
C) Redox 
D) Decomposition 
E) None of these choices are correct. 
A) Precipitation 
B) Acid-base 
C) Redox 
D) Decomposition 
E) None of these choices are correct.

Question 9

Calculate the molarity of a 23.55-mL solution which contains 28.24 mg of sodium sulfate (used in dyeing and printing textiles, ℳ = 139.04 g/mol).

Accepted Answer

A) 8.625 M 
B) 1.199 M 
C) 0.8339 M 
D) 0.2031 M 
E) 0.008625 M 
A) 8.625 M 
B) 1.199 M 
C) 0.8339 M 
D) 0.2031 M 
E) 0.008625 M

Question 10

Which of the following will be least soluble in water?

Accepted Answer

A) Potassium sulfate, K 2SO 4 
B) Ammonium nitrate, NH 4NO 3 
C) Chloromethane, CH 3Cl 
D) Calcium chloride, CaCl 2 
E) Ethanol, C 2H 6O 
A) Potassium sulfate, K 2SO 4 
B) Ammonium nitrate, NH 4NO 3 
C) Chloromethane, CH 3Cl 
D) Calcium chloride, CaCl 2 
E) Ethanol, C 2H 6O

Question 11

Select the correct set of products for the following reaction. Ba(OH)2(aq) + HNO3(aq) →

Accepted Answer

A) BaN 2( s)+ H 2O( l) 
B) Ba(NO 3)2( aq)+ H 2O( l) 
C) Ba( s)+ H 2( g)+ NO 2( g) 
D) Ba 2O( s)+ NO 2( g)+ H 2O( l) 
E) No reaction occurs. 
A) BaN 2( s)+ H 2O( l) 
B) Ba(NO 3)2( aq)+ H 2O( l) 
C) Ba( s)+ H 2( g)+ NO 2( g) 
D) Ba 2O( s)+ NO 2( g)+ H 2O( l) 
E) No reaction occurs.

Question 12

Which one of the following is a redox reaction?

Accepted Answer

A) 2Na( g)+ Cl 2( g)→ 2NaCl( s) 
B) Ba 2+( aq)+ SO 4 2−( aq)→ BaSO 4( s) 
C) K 2Cr 2O 7( aq)+ 2KOH( aq)→ 2K 2CrO 4( aq)+ H 2O( l) 
D) Na 2CO 3( s)+ 2HCl( aq)→ 2NaCl( aq)+ CO 2( g)+ H 2O( l) 
E) H 2O( l)→ H +( aq)+ OH −( aq) 
A) 2Na( g)+ Cl 2( g)→ 2NaCl( s) 
B) Ba 2+( aq)+ SO 4 2−( aq)→ BaSO 4( s) 
C) K 2Cr 2O 7( aq)+ 2KOH( aq)→ 2K 2CrO 4( aq)+ H 2O( l) 
D) Na 2CO 3( s)+ 2HCl( aq)→ 2NaCl( aq)+ CO 2( g)+ H 2O( l) 
E) H 2O( l)→ H +( aq)+ OH −( aq)

Question 13

How many moles of H+(aq) ions are present in 750 mL of 0.65 M hydrochloric acid?

Accepted Answer

A) 1.2 mol 
B) 0.98 mol 
C) 0.87 mol 
D) 0.65 mol 
E) 0.49 mol 
A) 1.2 mol 
B) 0.98 mol 
C) 0.87 mol 
D) 0.65 mol 
E) 0.49 mol

Question 14

What is the oxidation number of iodine in I2.

Accepted Answer

A) −1 
B) 0 
C) +1 
D) +7 
E) None of these choices are correct. 
A) −1 
B) 0 
C) +1 
D) +7 
E) None of these choices are correct.

Question 15

How many mL of concentrated nitric acid (HNO3, 16.0 M) should be diluted with water in order to make 2.00 L of 2.00 M solution?

Accepted Answer

A) 32.0 mL 
B) 62.5 mL 
C) 125 mL 
D) 250 mL 
E) 500 mL 
A) 32.0 mL 
B) 62.5 mL 
C) 125 mL 
D) 250 mL 
E) 500 mL

Question 16

Which of the following is a weak acid?

Accepted Answer

A) H 2SO 4 
B) HNO 3 
C) HF 
D) HBr 
E) HCl 
A) H 2SO 4 
B) HNO 3 
C) HF 
D) HBr 
E) HCl

Question 17

Calculate the oxidation number of the chlorine in perchloric acid, HClO4, a strong oxidizing agent.

Accepted Answer

A) −1 
B) +4 
C) +5 
D) +7 
E) None of these choices are correct. 
A) −1 
B) +4 
C) +5 
D) +7 
E) None of these choices are correct.

Question 18

Select the precipitate that forms when aqueous lead(II) nitrate reacts with aqueous sodium sulfate.

Accepted Answer

A) NaNO 3 
B) Na 2NO 3 
C) PbSO 4 
D) Pb 2SO 4 
E) PbS 
A) NaNO 3 
B) Na 2NO 3 
C) PbSO 4 
D) Pb 2SO 4 
E) PbS

Question 19

Some covalent compounds dissolve in water to produce conducting solutions.

Accepted Answer

A) True 
 B)False

Question 20

Which, if any, of the following properties applies to weak acids?

Accepted Answer

A) They are strong electrolytes. 
B) They are excellent conductors of electricity. 
C) When dissolved in water, they do not ionize completely. 
D) All of these choices are correct. 
E) None of these choices are correct. 
A) They are strong electrolytes. 
B) They are excellent conductors of electricity. 
C) When dissolved in water, they do not ionize completely. 
D) All of these choices are correct. 
E) None of these choices are correct.

Exam 4: Three Major Classes of Chemical Reactions

Select the classification for the following reaction. NH3(aq) + HNO3(aq) → NH4NO3(aq)

In an acid-base (neutralization) reaction the equivalence point is the point where the indicator changes color.

Predict the products by completing a balanced equation for the following decomposition reaction. CaCl2(l) ?

Predict the product(s) for the following reaction. MgCO3(s)

Which one of the following ionic compounds is soluble in water?

Reduction is the loss of electrons.

Select the classification for the following reaction. BaCl2(aq) + K2SO4(aq) → BaSO4(s) + 2KCl(aq)

Select the classification for the following reaction. Fe2+(aq) + 2OH-(aq) → Fe(OH)2(s)

Calculate the molarity of a 23.55-mL solution which contains 28.24 mg of sodium sulfate (used in dyeing and printing textiles, ℳ = 139.04 g/mol).

Which of the following will be least soluble in water?

Select the correct set of products for the following reaction. Ba(OH)2(aq) + HNO3(aq) →

Which one of the following is a redox reaction?

How many moles of H+(aq) ions are present in 750 mL of 0.65 M hydrochloric acid?

What is the oxidation number of iodine in I2.

How many mL of concentrated nitric acid (HNO3, 16.0 M) should be diluted with water in order to make 2.00 L of 2.00 M solution?

Which of the following is a weak acid?

Calculate the oxidation number of the chlorine in perchloric acid, HClO4, a strong oxidizing agent.

Select the precipitate that forms when aqueous lead(II) nitrate reacts with aqueous sodium sulfate.

Some covalent compounds dissolve in water to produce conducting solutions.

Which, if any, of the following properties applies to weak acids?

Keys to the Study of Chemistry: Definitions, Units, and Problem Solving

The Components of Matter

Stoichiometry of Formulas and Equations

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids, Solids, and Phase Changes

The Properties of Mixtures: Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and Reaction Direction

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

Select the classification for the following reaction. NH₃(aq) + HNO₃(aq) → NH₄NO₃(aq)

Predict the products by completing a balanced equation for the following decomposition reaction. CaCl₂(l) ?

Predict the product(s) for the following reaction. MgCO₃(s)

Select the classification for the following reaction. BaCl₂(aq) + K₂SO₄(aq) → BaSO₄(s) + 2KCl(aq)

Select the classification for the following reaction. Fe²⁺(aq) + 2OH^-(aq) → Fe(OH)₂(s)

Select the correct set of products for the following reaction. Ba(OH)₂(aq) + HNO₃(aq) →

How many moles of H⁺(aq) ions are present in 750 mL of 0.65 M hydrochloric acid?

What is the oxidation number of iodine in I₂.

How many mL of concentrated nitric acid (HNO₃, 16.0 M) should be diluted with water in order to make 2.00 L of 2.00 M solution?

Calculate the oxidation number of the chlorine in perchloric acid, HClO₄, a strong oxidizing agent.