Question 1

Which equation correctly represents the reaction between carbon dioxide and water?

Accepted Answer

A) CO2 (aq)+ H2O (l)→ H2CO3 (aq) 
B) CO2 (aq)+ H2O (l)→ H2 (g)+ CO (g)+ O2 (g) 
C) CO2 (aq)+ H2O (l)→ H2O2 (aq)+ CO (g) 
D) CO2 (aq)+ 2H2O (l)→ CH4 (g)+ 2O2 (aq) 
E) CO2 (aq)+ H2O (l)→ H2CO (aq)+ O2 (g) 
A) CO2 (aq)+ H2O (l)→ H2CO3 (aq) 
B) CO2 (aq)+ H2O (l)→ H2 (g)+ CO (g)+ O2 (g) 
C) CO2 (aq)+ H2O (l)→ H2O2 (aq)+ CO (g) 
D) CO2 (aq)+ 2H2O (l)→ CH4 (g)+ 2O2 (aq) 
E) CO2 (aq)+ H2O (l)→ H2CO (aq)+ O2 (g)

Question 2

Which equation correctly represents the reaction between silica and hydrofluoric acid?

Accepted Answer

A) SiCl4 + 4HF → SiF4 + 4HCl 
B) SiO2 + 6HF → H2SiF6 + 2H2O 
C) SiCl2 + 2HF → SiF2 + 2HCl 
D) SiH4 + 4HF → SiF4 + 4H2 
E) none of the above 
A) SiCl4 + 4HF → SiF4 + 4HCl 
B) SiO2 + 6HF → H2SiF6 + 2H2O 
C) SiCl2 + 2HF → SiF2 + 2HCl 
D) SiH4 + 4HF → SiF4 + 4H2 
E) none of the above

Question 3

The white allotropic form of ________ bursts into flame when exposed to air.

Accepted Answer

A) phosphorus 
B) carbon 
C) sulfur 
D) selenium 
E) oxygen 
A) phosphorus 
B) carbon 
C) sulfur 
D) selenium 
E) oxygen

Question 4

Write the correctly balanced equation for the reaction between elemental iodine and sodium bromide.

Accepted Answer

I₂ + NaBr →

Question 5

The balanced equation for the production of ethylene from calcium carbide is ________.

Accepted Answer

CaC₂ + 2H₂O

Question 6

What is the primary commercial source of elemental nitrogen?

Accepted Answer

fractional

Question 7

The oxidation number of Pb in PbO2 is ________.

Accepted Answer

A) +1 
B) +2 
C) +3 
D) +4 
E) +5 
A) +1 
B) +2 
C) +3 
D) +4 
E) +5

Question 8

Which one of the following is false concerning tritium?

Accepted Answer

A) It is radioactive, emitting alpha particles with a half-life of 12.3 yr. 
B) It can be produced by neutron bombardment of lithium-6. 
C) It has the same chemical properties as protium but reacts more slowly. 
D) The atomic number of tritium is 1. 
A) It is radioactive, emitting alpha particles with a half-life of 12.3 yr. 
B) It can be produced by neutron bombardment of lithium-6. 
C) It has the same chemical properties as protium but reacts more slowly. 
D) The atomic number of tritium is 1.

Question 9

Xenon can have oxidation states of 2,4,6,and 8.

Accepted Answer

A) True 
 B)False

Question 10

________ can violate the octet rule in its compounds.

Accepted Answer

A) carbon 
B) nitrogen 
C) boron 
D) oxygen 
E) none of these elements can violate the octet rule. 
A) carbon 
B) nitrogen 
C) boron 
D) oxygen 
E) none of these elements can violate the octet rule.

Question 11

The oxidation state of As in the As2O3 molecule is ________.

Accepted Answer

A) 3 
B) 2 
C) 4 
D) -3 
E) 0 
A) 3 
B) 2 
C) 4 
D) -3 
E) 0

Question 12

Replacement of CaO by PbO in soda-lime glass results in ________.

Accepted Answer

A) denser glass with a higher refractive index 
B) glass with a deep blue color 
C) opaque glass 
D) a softer glass with a lower melting point 
E) a harder glass with a higher melting point 
A) denser glass with a higher refractive index 
B) glass with a deep blue color 
C) opaque glass 
D) a softer glass with a lower melting point 
E) a harder glass with a higher melting point

Question 13

Addition of     to soda-lime glass ________.

Accepted Answer

A) imparts a greater ability to withstand temperature change 
B) imparts a deep blue color 
C) results in a denser glass with a higher refractive index 
D) results in a glass with a lower melting point 
E) results in opaque glass 
A) imparts a greater ability to withstand temperature change 
B) imparts a deep blue color 
C) results in a denser glass with a higher refractive index 
D) results in a glass with a lower melting point 
E) results in opaque glass

Question 14

Dissolving 2.0 mol of ________ in 1.0 L of water at 25 °C would yield the most acidic solution.

Accepted Answer

A) CO2 
B) Na2O 
C) SO3 
D) CO 
E) CaO 
A) CO2 
B) Na2O 
C) SO3 
D) CO 
E) CaO

Question 15

Chains of silicate tetrahedra are called ________.

Accepted Answer

The answer of Chains of silicate tetrahedra are called ________....

Question 16

What sulfur compound is used to sterilize wine?

Accepted Answer

A) H2SO4 
B) H2S 
C) Na2SO3 
D) SO2 
E) Na2S 
A) H2SO4 
B) H2S 
C) Na2SO3 
D) SO2 
E) Na2S

Question 17

What is the function of the carbon fibers in a composite?

Accepted Answer

A) to provide a structure to help the epoxy resin solidify in the desired shape 
B) to transmit loads evenly in all directions 
C) to provide resistance to oxidation 
D) to provide ultraviolet protection 
E) to "spread out" the epoxy so that it remains more flexible 
A) to provide a structure to help the epoxy resin solidify in the desired shape 
B) to transmit loads evenly in all directions 
C) to provide resistance to oxidation 
D) to provide ultraviolet protection 
E) to "spread out" the epoxy so that it remains more flexible

Question 18

The interhalogen compound ICl3 can form but BrCl3 cannot form.This is because ________.

Accepted Answer

A) iodine is large enough to accommodate three chlorine atoms around itself but bromine is not 
B) bromine is not electronegative enough to react with chlorine 
C) bromine is too electronegative to react with chlorine 
D) iodine can have a positive oxidation state but bromine cannot 
E) iodine can have a negative oxidation state but bromine cannot 
A) iodine is large enough to accommodate three chlorine atoms around itself but bromine is not 
B) bromine is not electronegative enough to react with chlorine 
C) bromine is too electronegative to react with chlorine 
D) iodine can have a positive oxidation state but bromine cannot 
E) iodine can have a negative oxidation state but bromine cannot

Question 19

The disilicate ion is ________.

Accepted Answer

A) Si2O88- 
B) Si2O76- 
C) Si2O84- 
D) Si2O86- 
E) Si2O72- 
A) Si2O88- 
B) Si2O76- 
C) Si2O84- 
D) Si2O86- 
E) Si2O72-

Question 20

The two allotropic forms of phosphorus are ________ and ________.

Accepted Answer

A) black, red 
B) white, black 
C) white, yellow 
D) white, red 
E) black, yellow 
A) black, red 
B) white, black 
C) white, yellow 
D) white, red 
E) black, yellow

Exam 22: Chemistry of the Nonmetals

Which equation correctly represents the reaction between carbon dioxide and water?

Which equation correctly represents the reaction between silica and hydrofluoric acid?

The white allotropic form of ________ bursts into flame when exposed to air.

Write the correctly balanced equation for the reaction between elemental iodine and sodium bromide.

The balanced equation for the production of ethylene from calcium carbide is ________.

What is the primary commercial source of elemental nitrogen?

The oxidation number of Pb in PbO2 is ________.

Which one of the following is false concerning tritium?

Xenon can have oxidation states of 2,4,6,and 8.

________ can violate the octet rule in its compounds.

The oxidation state of As in the As2O3 molecule is ________.

Replacement of CaO by PbO in soda-lime glass results in ________.

Addition of to soda-lime glass ________.

Dissolving 2.0 mol of ________ in 1.0 L of water at 25 °C would yield the most acidic solution.

Chains of silicate tetrahedra are called ________.

What sulfur compound is used to sterilize wine?

What is the function of the carbon fibers in a composite?

The interhalogen compound ICl3 can form but BrCl3 cannot form.This is because ________.

The disilicate ion is ________.

The two allotropic forms of phosphorus are ________ and ________.

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

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

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

The oxidation number of Pb in PbO₂ is ________.

The oxidation state of As in the As₂O₃ molecule is ________.

The interhalogen compound ICl₃ can form but BrCl₃ cannot form.This is because ________.

The two allotropic forms of phosphorus are and .