Question 1

The following accurately depicts the balanced chemical equation for a laboratory preparation of nitrogen gas.NH4NO2(s) $\rarr$ 2H2O(g) + N2(g)

Accepted Answer

A) True 
 B)False  True

Question 2

Which of these substances is being considered as a replacement fuel for gasoline

Accepted Answer

A)  D2O 
B)  H2 
C)  NO2 
D)  F2 
E)  He 
A)  D2O 
B)  H2 
C)  NO2 
D)  F2 
E)  He B

Question 3

Choose the true statement concerning the relative acid strengths of H2SO4 and H2SO3.

Accepted Answer

A)  H2SO4 is a stronger acid than H2SO3 because the S in H2SO4 has a more positive oxidation state than the S in H2SO3 which influences the polarity of the O-H bonds. 
B)  H2SO4 is a weaker acid than H2SO3 because the S in H2SO4 has a more positive oxidation state than the S in H2SO3 which influences the polarity of the O-H bonds. 
C)  H2SO4 is a stronger acid than H2SO3 because the S in H2SO4 has a less positive oxidation state than the S in H2SO3 which influences the polarity of the O-H bonds. 
D)  H2SO4 is a weaker acid than H2SO3 because the S in H2SO4 has a more negative oxidation state than the S in H2SO3 which influences the polarity of the O-H bonds. 
A)  H2SO4 is a stronger acid than H2SO3 because the S in H2SO4 has a more positive oxidation state than the S in H2SO3 which influences the polarity of the O-H bonds. 
B)  H2SO4 is a weaker acid than H2SO3 because the S in H2SO4 has a more positive oxidation state than the S in H2SO3 which influences the polarity of the O-H bonds. 
C)  H2SO4 is a stronger acid than H2SO3 because the S in H2SO4 has a less positive oxidation state than the S in H2SO3 which influences the polarity of the O-H bonds. 
D)  H2SO4 is a weaker acid than H2SO3 because the S in H2SO4 has a more negative oxidation state than the S in H2SO3 which influences the polarity of the O-H bonds. A

Question 4

Which of the following choices is/are ionic oxides
I. SrO 
II. SiO2 
III. SO2

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  II and III 
A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  II and III

Question 5

The presence of ozone in the upper atmosphere is important because

Accepted Answer

A)  O3 absorbs outgoing radiation from the earth's surface, thus helping to keep the earth warm. 
B)  O3 absorbs harmful solar radiation. 
C)  O3 dissolves in water droplets and is very reactive. 
D)  O3 is a major reactant in photosynthesis. 
A)  O3 absorbs outgoing radiation from the earth's surface, thus helping to keep the earth warm. 
B)  O3 absorbs harmful solar radiation. 
C)  O3 dissolves in water droplets and is very reactive. 
D)  O3 is a major reactant in photosynthesis.

Question 6

Which of these aqueous solutions has the lowest pH

Accepted Answer

A)  0.100 M NaOH 
B)  0.100 M Na2O 
C)  0.100 M Na3N 
D)  All of these solutions have the same pH due to the leveling effect. 
E)  These all are solutions of weak bases, so Kb values are needed in order to decide. 
A)  0.100 M NaOH 
B)  0.100 M Na2O 
C)  0.100 M Na3N 
D)  All of these solutions have the same pH due to the leveling effect. 
E)  These all are solutions of weak bases, so Kb values are needed in order to decide.

Question 7

Write the chemical formula of the superoxide ion.

Accepted Answer

A)  O2- 
B)  O- 
C)  O2- 
D)  O22- 
E)  None of the above 
A)  O2- 
B)  O- 
C)  O2- 
D)  O22- 
E)  None of the above

Question 8

Of the three oxides SiO2, MgO, and P4O10, the most acidic oxide is P4O10.

Accepted Answer

A) True 
 B)False

Question 9

Which one of these elements is not a gas at room temperature

Accepted Answer

A)  chlorine 
B)  fluorine 
C)  nitrogen 
D)  oxygen 
E)  sulfur 
A)  chlorine 
B)  fluorine 
C)  nitrogen 
D)  oxygen 
E)  sulfur

Question 10

The following is a balanced chemical equation that depicts the production of chlorine by the chlor-alkali process. $2 \mathrm{NaCl}(\mathrm{aq})+2 \mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \xrightarrow{\text { electrolysis }~~} 2 \mathrm{NaOH}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{g})+\mathrm{Cl}_{2}(\mathrm{g})$

Accepted Answer

A) True 
 B)False

Question 11

List the following acids in order of increasing acid strength: HOCl, HClO3, HClO4.

Accepted Answer

A)  HOCl 3 4 
B)  HClO4 3 3 4 4 3 
E)  HClO3 4 
A)  HOCl 3 4 
B)  HClO4 3 3 4 4 3 
E)  HClO3 4

Question 12

Determine all of the ionic hydrides from the compounds listed below.
I. CaH2 
II. H2S 
III. SiH4

Accepted Answer

A)  I only 
B)  II only 
C)  I and II 
D)  I and III 
E)  II and III 
A)  I only 
B)  II only 
C)  I and II 
D)  I and III 
E)  II and III

Question 13

What element is the most abundant by mass in Earth's crust

Accepted Answer

A)  Fe 
B)  H 
C)  K 
D)  P 
E)  O 
A)  Fe 
B)  H 
C)  K 
D)  P 
E)  O

Question 14

Which one of these elements is a liquid at room temperature

Accepted Answer

A)  bromine 
B)  chlorine 
C)  fluorine 
D)  iodine 
E)  selenium 
A)  bromine 
B)  chlorine 
C)  fluorine 
D)  iodine 
E)  selenium

Question 15

When liquid phosphorus trichloride reacts with water, the products are

Accepted Answer

A)  PCl5 and H3PO4. 
B)  H3PO3 and Cl2. 
C)  H3PO4 and HCl. 
D)  H3PO4 and Cl2. 
E)  H3PO3 and HCl. 
A)  PCl5 and H3PO4. 
B)  H3PO3 and Cl2. 
C)  H3PO4 and HCl. 
D)  H3PO4 and Cl2. 
E)  H3PO3 and HCl.

Question 16

Select basic oxide from the choices given.

Accepted Answer

A)  CaO 
B)  SiO2 
C)  CO2 
D)  P4O6 
E)  H2O2 
A)  CaO 
B)  SiO2 
C)  CO2 
D)  P4O6 
E)  H2O2

Question 17

Which of these aqueous solutions has the highest pH

Accepted Answer

A)  0.100 M NaOH 
B)  0.100 M Na2O 
C)  0.100 M Na3N 
D)  All of these solutions have the same pH due to the leveling effect. 
E)  These all are solutions of weak bases, so Kb values are needed in order to decide. 
A)  0.100 M NaOH 
B)  0.100 M Na2O 
C)  0.100 M Na3N 
D)  All of these solutions have the same pH due to the leveling effect. 
E)  These all are solutions of weak bases, so Kb values are needed in order to decide.

Question 18

Ozone (O3) and oxygen gas (O2) are examples of

Accepted Answer

A)  isotopes. 
B)  allotropes. 
C)  polymorphs. 
D)  alloys. 
E)  amphoterism. 
A)  isotopes. 
B)  allotropes. 
C)  polymorphs. 
D)  alloys. 
E)  amphoterism.

Question 19

In which of the following compounds is sulfur in a positive oxidation state

Accepted Answer

A)  H2S 
B)  S8 
C)  CaS 
D)  MnS 
E)  SO3 
A)  H2S 
B)  S8 
C)  CaS 
D)  MnS 
E)  SO3

Question 20

Select acidic oxide from the choices given.

Accepted Answer

A)  CaO 
B)  Na2O 
C)  Na2O2 
D)  P4O6 
E)  KOH 
A)  CaO 
B)  Na2O 
C)  Na2O2 
D)  P4O6 
E)  KOH

Exam 22: Nonmetallic Elements and Their Compounds

The following accurately depicts the balanced chemical equation for a laboratory preparation of nitrogen gas.NH4NO2(s) →\rarr→ 2H2O(g) + N2(g)

Which of these substances is being considered as a replacement fuel for gasoline

Choose the true statement concerning the relative acid strengths of H2SO4 and H2SO3.

Which of the following choices is/are ionic oxides I. SrO II. SiO2 III. SO2

The presence of ozone in the upper atmosphere is important because

Which of these aqueous solutions has the lowest pH

Write the chemical formula of the superoxide ion.

Of the three oxides SiO2, MgO, and P4O10, the most acidic oxide is P4O10.

Which one of these elements is not a gas at room temperature

List the following acids in order of increasing acid strength: HOCl, HClO3, HClO4.

Determine all of the ionic hydrides from the compounds listed below. I. CaH2 II. H2S III. SiH4

What element is the most abundant by mass in Earth's crust

Which one of these elements is a liquid at room temperature

When liquid phosphorus trichloride reacts with water, the products are

Select basic oxide from the choices given.

Which of these aqueous solutions has the highest pH

Ozone (O3) and oxygen gas (O2) are examples of

In which of the following compounds is sulfur in a positive oxidation state

Select acidic oxide from the choices given.

Chemistry: The Study of Change

Atoms Molecules and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Transition Metals Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

The following accurately depicts the balanced chemical equation for a laboratory preparation of nitrogen gas.NH₄NO₂(s) $\rarr$ 2H₂O(g) + N₂(g)

Choose the true statement concerning the relative acid strengths of H₂SO₄ and H₂SO_3.

Which of the following choices is/are ionic oxides I. SrO II. SiO₂ III. SO₂

Of the three oxides SiO₂, MgO, and P₄O₁₀, the most acidic oxide is P₄O₁₀.

List the following acids in order of increasing acid strength: HOCl, HClO₃, HClO₄.

Determine all of the ionic hydrides from the compounds listed below. I. CaH₂ II. H₂S III. SiH₄

Ozone (O₃) and oxygen gas (O₂) are examples of