Question 1

Which equation correctly represents what happens when NO2 dissolves in water?

Accepted Answer

A) NO2 (g)+ H2O (l)→ 2H+ (aq)+ NO3- (aq) 
B) 3NO2 (g)+ H2O (l)→ 2H+ (aq)+ 2NO3- (aq)+ NO (g) 
C) NO2 (g)+ H2O (l)→ H2O2 (aq)+ NO (g) 
D) 2NO2 (g)+ H2O (l)→ 2H+ (aq)+ NO42- (aq)+ NO (g) 
E) 2NO2 (g)+ 2H2O (l)→ 2 HNO2 (aq)+ O2 (g)+ H2 (g) 
A) NO2 (g)+ H2O (l)→ 2H+ (aq)+ NO3- (aq) 
B) 3NO2 (g)+ H2O (l)→ 2H+ (aq)+ 2NO3- (aq)+ NO (g) 
C) NO2 (g)+ H2O (l)→ H2O2 (aq)+ NO (g) 
D) 2NO2 (g)+ H2O (l)→ 2H+ (aq)+ NO42- (aq)+ NO (g) 
E) 2NO2 (g)+ 2H2O (l)→ 2 HNO2 (aq)+ O2 (g)+ H2 (g)

Question 2

What gas has the odor of bitter almonds?

Accepted Answer

A) H2S 
B) NO2 
C) CO 
D) HCN 
E) Cl2 
A) H2S 
B) NO2 
C) CO 
D) HCN 
E) Cl2

Question 3

The oxidation state of oxygen in OF2 is

Accepted Answer

A) +1 
B) +2 
C) 0 
D) -1 
E) -2 
A) +1 
B) +2 
C) 0 
D) -1 
E) -2

Question 4

Water gas is ________.

Accepted Answer

A) H2O and H2 
B) CO2 and O2 
C) H2O and CO2 
D) H2O and CO 
E) H2 and CO 
A) H2O and H2 
B) CO2 and O2 
C) H2O and CO2 
D) H2O and CO 
E) H2 and CO

Question 5

Explain why HF (aq)is a relatively weak acid compared to other hydrohalic acids.

Accepted Answer

(i)Fluorine, being the smallest of the h

Question 6

What is the formula of borax?

Accepted Answer

A) H3BO3 
B) H2B4O7 
C) P5O8 
D) B2O3 
E) Na2B4O7∙10H2O 
A) H3BO3 
B) H2B4O7 
C) P5O8 
D) B2O3 
E) Na2B4O7∙10H2O

Question 7

Silicones are

Accepted Answer

A) chains of alternating silicon and oxygen atoms with attached organic groups. 
B) three-dimensional covalent networks of SiO4 tetrahedra. 
C) three-dimensional covalent networks of silicon atoms. 
D) flat sheets of silicon atoms. 
E) flat sheets of silicon and hydrogen atoms. 
A) chains of alternating silicon and oxygen atoms with attached organic groups. 
B) three-dimensional covalent networks of SiO4 tetrahedra. 
C) three-dimensional covalent networks of silicon atoms. 
D) flat sheets of silicon atoms. 
E) flat sheets of silicon and hydrogen atoms.

Question 8

Compounds containing only boron and hydrogen are called __________.

Accepted Answer

The answer of Compounds containing only boron and hydrogen are...

Question 9

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 10

Glass is __________ whereas quartz is __________.

Accepted Answer

A) hard, soft 
B) crystalline, amorphous 
C) amorphous, crystalline 
D) pure SiO2, a mixture of SiO2 and carbonates 
E) breakable, not breakable 
A) hard, soft 
B) crystalline, amorphous 
C) amorphous, crystalline 
D) pure SiO2, a mixture of SiO2 and carbonates 
E) breakable, not breakable

Question 11

The electrical conductivity of __________ is low in the dark, but increases on exposure to light.

Accepted Answer

The answer of The electrical conductivity of __________ is low...

Question 12

What is the primary commercial source of elemental nitrogen?

Accepted Answer

fractional

Question 13

All oxides are ionic compounds.

Accepted Answer

A) True 
 B)False

Question 14

The addition of solid potassium cyanide to aqueous hydrochloric acid will produce __________.

Accepted Answer

A) H2O 
B) HCN 
C) NH3 
D) K2CO3 
E) K2C2 
A) H2O 
B) HCN 
C) NH3 
D) K2CO3 
E) K2C2

Question 15

Which of the following is the nitride ion?

Accepted Answer

A) N3- 
B) N3- 
C) NO3- 
D) NO2- 
E) N- 
A) N3- 
B) N3- 
C) NO3- 
D) NO2- 
E) N-

Question 16

Br2 can be prepared by combining NaBr with __________.

Accepted Answer

A) Cl2 
B) HBr 
C) HCl 
D) NaCl 
E) I2 
A) Cl2 
B) HBr 
C) HCl 
D) NaCl 
E) I2

Question 17

What sulfur gas is used to sterilize wine?

Accepted Answer

The answer of What sulfur gas is used to sterilize...

Question 18

Chlorine can have a positive oxidation state

Accepted Answer

A) if it combines with bromine or iodine. 
B) if it combines with oxygen or fluorine. 
C) if it combines with hydrogen. 
D) if it combines with an alkali metal. 
E) in its elemental form. 
A) if it combines with bromine or iodine. 
B) if it combines with oxygen or fluorine. 
C) if it combines with hydrogen. 
D) if it combines with an alkali metal. 
E) in its elemental form.

Question 19

The oxidation number of N in HNO3 is __________.

Accepted Answer

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

Question 20

What is the oxidation state of xenon in XeO4?

Accepted Answer

A) +8 
B) +6 
C) +4 
D) +2 
E) 0 
A) +8 
B) +6 
C) +4 
D) +2 
E) 0

Exam 22: Chemistry of the Nonmetals

Which equation correctly represents what happens when NO2 dissolves in water?

What gas has the odor of bitter almonds?

The oxidation state of oxygen in OF2 is

Water gas is ________.

Explain why HF (aq)is a relatively weak acid compared to other hydrohalic acids.

What is the formula of borax?

Silicones are

Compounds containing only boron and hydrogen are called __________.

What sulfur compound is used to sterilize wine?

Glass is __________ whereas quartz is __________.

The electrical conductivity of __________ is low in the dark, but increases on exposure to light.

What is the primary commercial source of elemental nitrogen?

All oxides are ionic compounds.

The addition of solid potassium cyanide to aqueous hydrochloric acid will produce __________.

Which of the following is the nitride ion?

Br2 can be prepared by combining NaBr with __________.

What sulfur gas is used to sterilize wine?

Chlorine can have a positive oxidation state

The oxidation number of N in HNO3 is __________.

What is the oxidation state of xenon in XeO4?

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

Which equation correctly represents what happens when NO₂ dissolves in water?

The oxidation state of oxygen in OF₂ is

Glass is whereas quartz is .

Br₂ can be prepared by combining NaBr with __________.

The oxidation number of N in HNO₃ is __________.

What is the oxidation state of xenon in XeO₄?