Question 1

What are the products of the reaction of PCl5 (g)and water?

Accepted Answer

A) phosphoric acid and phosphorous acid 
B) elemental phosphorus and hydrochloric acid 
C) phosphoric acid and chlorine gas 
D) elemental phosphorus and chlorine gas 
E) phosphoric acid and hydrochloric acid 
A) phosphoric acid and phosphorous acid 
B) elemental phosphorus and hydrochloric acid 
C) phosphoric acid and chlorine gas 
D) elemental phosphorus and chlorine gas 
E) phosphoric acid and hydrochloric acid

Question 2

The careful, thermal decomposition of solid ammonium nitrate will yield ________.

Accepted Answer

A) N2O 
B) NO 
C) NO2 
D) N2O3 
E) N2O5 
A) N2O 
B) NO 
C) NO2 
D) N2O3 
E) N2O5

Question 3

Additives can be used in soda-lime glass to alter its ________.

Accepted Answer

A) ability to withstand temperature change 
B) color 
C) hardness 
D) melting point 
E) any of the above 
A) ability to withstand temperature change 
B) color 
C) hardness 
D) melting point 
E) any of the above

Question 4

The prefix thio- denotes

Accepted Answer

A) replacement of an oxygen atom by a sulfur atom. 
B) a sulfur-sulfur double bond. 
C) sulfur in a negative oxidation state. 
D) a sulfur-oxygen double bond. 
E) an allotropic form of sulfur. 
A) replacement of an oxygen atom by a sulfur atom. 
B) a sulfur-sulfur double bond. 
C) sulfur in a negative oxidation state. 
D) a sulfur-oxygen double bond. 
E) an allotropic form of sulfur.

Question 5

In the following chemical equation PCl3 + 3H2O →
The products (when the equation is balanced)are ________.

Accepted Answer

A) H3PO3 + 3HCl 
B) P(OH)3 + 3HCl 
C) H(ClO)3 + PH3 
D) HPCl2 + Cl(OH)3 
E) PO3 + 3HCl 
A) H3PO3 + 3HCl 
B) P(OH)3 + 3HCl 
C) H(ClO)3 + PH3 
D) HPCl2 + Cl(OH)3 
E) PO3 + 3HCl

Question 6

The oxidation state of sulfur in the SO3 molecule is ________.

Accepted Answer

A) +6 
B) +2 
C) -2 
D) +4 
E) 0 
A) +6 
B) +2 
C) -2 
D) +4 
E) 0

Question 7

Which one of the following is false concerning pure hydrazine?

Accepted Answer

A) It is an oily, colorless liquid. 
B) It can be made by reaction of hypochlorite and ammonia. 
C) It is used as a rocket fuel. 
D) Hydrazine is quite poisonous. 
E) It is a clear, red liquid that is highly viscous. 
A) It is an oily, colorless liquid. 
B) It can be made by reaction of hypochlorite and ammonia. 
C) It is used as a rocket fuel. 
D) Hydrazine is quite poisonous. 
E) It is a clear, red liquid that is highly viscous.

Question 8

The heavier noble gases are more reactive than the lighter ones because ________.

Accepted Answer

A) the lighter noble gases exist as diatomic molecules. 
B) the lighter noble gases have complete octets. 
C) the heavier noble gases are more abundant. 
D) the heavier noble gases have low ionization energies relative to the lighter ones. 
E) the heavier noble gases have greater electron affinities. 
A) the lighter noble gases exist as diatomic molecules. 
B) the lighter noble gases have complete octets. 
C) the heavier noble gases are more abundant. 
D) the heavier noble gases have low ionization energies relative to the lighter ones. 
E) the heavier noble gases have greater electron affinities.

Question 9

Diborane is ________.

Accepted Answer

A) B10H14 
B) B2O3 
C) BH3 
D) B2H6 
E) H3BO3 
A) B10H14 
B) B2O3 
C) BH3 
D) B2H6 
E) H3BO3

Question 10

The most common oxidation state of silicon is ________.

Accepted Answer

A) -4 
B) +2 
C) +6 
D) -2 
E) +4 
A) -4 
B) +2 
C) +6 
D) -2 
E) +4

Question 11

What are the five crystalline allotropes of carbon?

Accepted Answer

graphene, carbon nan

Question 12

Of the following, which is most likely to form interstitial carbides?

Accepted Answer

A) active metals 
B) transition metals 
C) boron and silicon 
D) alkaline earth metals 
E) alkali metals 
A) active metals 
B) transition metals 
C) boron and silicon 
D) alkaline earth metals 
E) alkali metals

Question 13

Boric acid condenses to form tetraboric acid according to the equation ________.

Accepted Answer

A) 4H3BO3 (s) → 2H2B2O7 (s) + 3H2O (g) 
B) 2H3BO3 (s) → HB2O2 (s) + 4H2O (g) 
C) 4H3BO3 (s) → HB4O8 (s) + 4H2O (g) 
D) 2H3BO3 (s) → H2B4O7 (s) + 3H2O (g) 
E) 4H3BO3 (s) → H2B4O7 (s) + 5H2O (g) 
A) 4H3BO3 (s) → 2H2B2O7 (s) + 3H2O (g) 
B) 2H3BO3 (s) → HB2O2 (s) + 4H2O (g) 
C) 4H3BO3 (s) → HB4O8 (s) + 4H2O (g) 
D) 2H3BO3 (s) → H2B4O7 (s) + 3H2O (g) 
E) 4H3BO3 (s) → H2B4O7 (s) + 5H2O (g)

Question 14

Pyrex® glass is formed by adding an oxide of ________ to soda-lime glass.

Accepted Answer

A) lead 
B) cobalt 
C) boron 
D) silver 
E) phosphorous 
A) lead 
B) cobalt 
C) boron 
D) silver 
E) phosphorous

Question 15

Sodium borohydride, NaBH4, is a strong reducing agent because ________.

Accepted Answer

A) Na+ is easily reduced to Na (s) 
B) boron easily changes its oxidation number from +3 to -3 
C) boron is readily oxidized from -3 oxidation state to +3 
D) hydrogen can be easily oxidized from -1 oxidation state to +1 
E) hydrogen is easily reduced from +1 oxidation state to 0 
A) Na+ is easily reduced to Na (s) 
B) boron easily changes its oxidation number from +3 to -3 
C) boron is readily oxidized from -3 oxidation state to +3 
D) hydrogen can be easily oxidized from -1 oxidation state to +1 
E) hydrogen is easily reduced from +1 oxidation state to 0

Question 16

Which compound would produce an acidic aqueous solution?

Accepted Answer

A) HF 
B) MgH2 
C) C2H2 
D) KH 
E) H2 
A) HF 
B) MgH2 
C) C2H2 
D) KH 
E) H2

Question 17

Which of the following is a molecular hydride?

Accepted Answer

A) H2O 
B) CsH 
C) MgH2 
D) TiH2 
E) LiOH 
A) H2O 
B) CsH 
C) MgH2 
D) TiH2 
E) LiOH

Question 18

Which of the following would produce a basic solution?

Accepted Answer

A) CO and CO2 
B) Na2O and MgO 
C) Na2O, MgO, and BeH2 
D) BeH2 only 
E) CO, CO2, and BeH2 
A) CO and CO2 
B) Na2O and MgO 
C) Na2O, MgO, and BeH2 
D) BeH2 only 
E) CO, CO2, and BeH2

Question 19

The reaction between nitrogen dioxide and water is a ________.

Accepted Answer

A) decomposition 
B) combustion 
C) disproportionation 
D) neutralization 
E) replacement 
A) decomposition 
B) combustion 
C) disproportionation 
D) neutralization 
E) replacement

Question 20

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

Exam 22: Chemistry of the Nonmetals

What are the products of the reaction of PCl5 (g)and water?

The careful, thermal decomposition of solid ammonium nitrate will yield ________.

Additives can be used in soda-lime glass to alter its ________.

The prefix thio- denotes

In the following chemical equation PCl3 + 3H2O → The products (when the equation is balanced)are ________.

The oxidation state of sulfur in the SO3 molecule is ________.

Which one of the following is false concerning pure hydrazine?

The heavier noble gases are more reactive than the lighter ones because ________.

Diborane is ________.

The most common oxidation state of silicon is ________.

What are the five crystalline allotropes of carbon?

Of the following, which is most likely to form interstitial carbides?

Boric acid condenses to form tetraboric acid according to the equation ________.

Pyrex® glass is formed by adding an oxide of ________ to soda-lime glass.

Sodium borohydride, NaBH4, is a strong reducing agent because ________.

Which compound would produce an acidic aqueous solution?

Which of the following is a molecular hydride?

Which of the following would produce a basic solution?

The reaction between nitrogen dioxide and water is a ________.

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

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution 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

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

What are the products of the reaction of PCl₅ (g)and water?

In the following chemical equation PCl₃ + 3H₂O → The products (when the equation is balanced)are ________.

The oxidation state of sulfur in the SO₃ molecule is ________.

Sodium borohydride, NaBH₄, is a strong reducing agent because ________.