Question 1

The phase diagram for helium

Accepted Answer

A) indicates that helium exists as He(g)and He(l)at about 2 K. 
B) indicates that helium exists only as a gas. 
C) has two triple points. 
D) indicates that helium can be liquefied at ordinary pressures. 
E) indicates that helium has three phases. 
A) indicates that helium exists as He(g)and He(l)at about 2 K. 
B) indicates that helium exists only as a gas. 
C) has two triple points. 
D) indicates that helium can be liquefied at ordinary pressures. 
E) indicates that helium has three phases.

Question 2

Which of the following has the largest atomic radius?

Accepted Answer

A) In 
B) Ga 
C) Ge 
D) Al 
A) In 
B) Ga 
C) Ge 
D) Al

Question 3

Complete and balance
XeF4(s)+ H2O(l)F1F1F1S1F1F1F10

Accepted Answer

6XeF₄(s)+ 12H₂O(l)F1F1

Question 4

The preparation of HI(g)by the reaction of KI(s)with phosphoric acid is not a redox reaction.True or false?

Accepted Answer

A) True 
 B)False

Question 5

What occurs when beryllium is added to aqueous sodium hydroxide?

Accepted Answer

A) Be(OH)2(s)precipitates. 
B) Beryllium dissolves to form [Be(OH)4]2F1F1F1S1F1F1F10(aq). 
C) Beryllium dissolves to form [Be(OH2)6]2+(aq). 
D) O2(g)is produced. 
E) No reaction occurs because beryllium is not soluble in aqueous sodium hydroxide. 
A) Be(OH)2(s)precipitates. 
B) Beryllium dissolves to form [Be(OH)4]2F1F1F1S1F1F1F10(aq). 
C) Beryllium dissolves to form [Be(OH2)6]2+(aq). 
D) O2(g)is produced. 
E) No reaction occurs because beryllium is not soluble in aqueous sodium hydroxide.

Question 6

The valence electrons of elements in the lower left of the periodic table experience the greatest effective nuclear charge.True or false?

Accepted Answer

A) True 
 B)False

Question 7

Consider the reaction Fe(ClO4)3(aq)+ 6H2O(l)F1F1F1S1F1F1F10 Fe(H2O)63+ + 3ClO4F1F1F1S1F1F1F10(aq)
Which of the following statements are true?

Accepted Answer

A) Fe(ClO4)3 acts as a Lewis base. 
B) H2O acts as a Lewis acid. 
C) H2O acts as a Lewis base. 
D) H2O acts as a Brønsted acid. 
E) H2O acts as a Brønsted base. 
A) Fe(ClO4)3 acts as a Lewis base. 
B) H2O acts as a Lewis acid. 
C) H2O acts as a Lewis base. 
D) H2O acts as a Brønsted acid. 
E) H2O acts as a Brønsted base.

Question 8

Which of the following is paramagnetic?

Accepted Answer

A) N2  
B) N2O 
C) O22F1F1F1S1F1F1F10  
D) O3  
E) NO 
A) N2  
B) N2O 
C) O22F1F1F1S1F1F1F10  
D) O3  
E) NO

Question 9

Which of the following does not act as a Lewis acid?

Accepted Answer

A) Na2O 
B) NO  
C) NO2 
D) SO3  
E) CO2  
A) Na2O 
B) NO  
C) NO2 
D) SO3  
E) CO2

Question 10

In the Ostwald process,the total change in oxidation number of nitrogen from reactant to nitric acid is

Accepted Answer

A) 5. 
B) 3. 
C) 6. 
D) 8. 
E) 7. 
A) 5. 
B) 3. 
C) 6. 
D) 8. 
E) 7.

Question 11

Which of the substances below can be used to extinguish a magnesium fire?

Accepted Answer

A) Sand 
B) Carbon dioxide 
C) Nitrogen 
D) All of the substances listed react with burning magnesium. 
E) Water 
A) Sand 
B) Carbon dioxide 
C) Nitrogen 
D) All of the substances listed react with burning magnesium. 
E) Water

Question 12

Lithium and magnesium have similar properties and their compounds have covalent character.True or false?

Accepted Answer

A) True 
 B)False

Question 13

The term catenation refers to

Accepted Answer

A) the ability of sulfur to bond four oxygen atoms. 
B) the ability of sulfur to form chains of atoms. 
C) the fact that sulfur can exist as monatomic S(g). 
D) the fact that ozone is an allotrope of oxygen. 
E) the synthesis of sulfuric acid. 
A) the ability of sulfur to bond four oxygen atoms. 
B) the ability of sulfur to form chains of atoms. 
C) the fact that sulfur can exist as monatomic S(g). 
D) the fact that ozone is an allotrope of oxygen. 
E) the synthesis of sulfuric acid.

Question 14

The stable forms of chlorine,bromine,and iodine at 25F1F1F1S1F1F1F10C and 1 atm are

Accepted Answer

A) Cl2(g), Br2(g), and I2(g). 
B) Cl2(g), Br2(l), and I2(s). 
C) Cl2(g), Br2(l), and I2(l). 
D) Cl2(g), Br(l), and I(s). 
E) Cl2(g), Br(l), and I2(g). 
A) Cl2(g), Br2(g), and I2(g). 
B) Cl2(g), Br2(l), and I2(s). 
C) Cl2(g), Br2(l), and I2(l). 
D) Cl2(g), Br(l), and I(s). 
E) Cl2(g), Br(l), and I2(g).

Question 15

What two types of bonds involving hydrogen does diborane exhibit?

Accepted Answer

Bridging h

Question 16

Which of the Group 15 elements is(are)a metalloid(s)?

Accepted Answer

A) As only 
B) As and Sb 
C) P and As 
D) P, As, and Sb 
E) As, Sb, and Bi 
A) As only 
B) As and Sb 
C) P and As 
D) P, As, and Sb 
E) As, Sb, and Bi

Question 17

When sulfur is produced by the Claus process,the starting material is

Accepted Answer

A) H2SO4(l). 
B) Na2SO3(s). 
C) SO3(g). 
D) SO2(g). 
E) H2S(g). 
A) H2SO4(l). 
B) Na2SO3(s). 
C) SO3(g). 
D) SO2(g). 
E) H2S(g).

Question 18

Aluminum oxide dissolves in aqueous base.What are the products of this reaction?

Accepted Answer

A) Al(OH2)63+(aq)and H2(g) 
B) Al2O3(s)and H2(g) 
C) Al(OH2)63+(aq)and O2(g) 
D) Al(OH)4F1F1F1S1F1F1F10(aq)and H2(g) 
E) Al(OH)4F1F1F1S1F1F1F10(aq)and O2(g) 
A) Al(OH2)63+(aq)and H2(g) 
B) Al2O3(s)and H2(g) 
C) Al(OH2)63+(aq)and O2(g) 
D) Al(OH)4F1F1F1S1F1F1F10(aq)and H2(g) 
E) Al(OH)4F1F1F1S1F1F1F10(aq)and O2(g)

Question 19

When aluminum sulfate is dissolved in water,is the resulting solution acidic or basic? Explain.

Accepted Answer

acidic; Al(OH₂)₆³⁺(aq)+

Question 20

Which of the following is the anhydride of sulfurous acid?

Accepted Answer

A) SO2 
B) SO3 
C) SO42F1F1F1S1F1F1F10 
D) HSO4F1F1F1S1F1F1F10 
A) SO2 
B) SO3 
C) SO42F1F1F1S1F1F1F10 
D) HSO4F1F1F1S1F1F1F10

The phase diagram for helium

Which of the following has the largest atomic radius?

Complete and balance XeF₄(s)+ H₂O(l)

The preparation of HI(g)by the reaction of KI(s)with phosphoric acid is not a redox reaction.True or false?

What occurs when beryllium is added to aqueous sodium hydroxide?

The valence electrons of elements in the lower left of the periodic table experience the greatest effective nuclear charge.True or false?

Consider the reaction Fe(ClO₄)₃(aq)+ 6H₂O(l) Fe(H₂O)₆³⁺ + 3ClO₄^(aq) Which of the following statements are true?

Which of the following is paramagnetic?

Which of the following does not act as a Lewis acid?

In the Ostwald process,the total change in oxidation number of nitrogen from reactant to nitric acid is

Which of the substances below can be used to extinguish a magnesium fire?

Lithium and magnesium have similar properties and their compounds have covalent character.True or false?

The term catenation refers to

The stable forms of chlorine,bromine,and iodine at 25C and 1 atm are

What two types of bonds involving hydrogen does diborane exhibit?

Which of the Group 15 elements is(are)a metalloid(s)?

When sulfur is produced by the Claus process,the starting material is

Aluminum oxide dissolves in aqueous base.What are the products of this reaction?

When aluminum sulfate is dissolved in water,is the resulting solution acidic or basic? Explain.

Which of the following is the anhydride of sulfurous acid?

The Quantum World

Quantum Mechanics in Action: Atoms

Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

Liquids and Solids

Inorganic Materials

Thermodynamics: the First Law

Thermodynamics: the Second and Third Laws

Physical Equilibria

Chemical Equilibria

Acids and Bases

Aqueous Equilibria

Electrochemistry

Chemical Kinetics

The Elements: the D Block

Nuclear Chemistry

Organic Chemistry I

Organic Chemistry II

Filters

Exam 16: The Elements: the Main Group Elements

The phase diagram for helium

Which of the following has the largest atomic radius?

Complete and balance XeF4(s)+ H2O(l)

The preparation of HI(g)by the reaction of KI(s)with phosphoric acid is not a redox reaction.True or false?

What occurs when beryllium is added to aqueous sodium hydroxide?

The valence electrons of elements in the lower left of the periodic table experience the greatest effective nuclear charge.True or false?

Consider the reaction Fe(ClO4)3(aq)+ 6H2O(l) Fe(H2O)63+ + 3ClO4(aq) Which of the following statements are true?

Which of the following is paramagnetic?

Which of the following does not act as a Lewis acid?

In the Ostwald process,the total change in oxidation number of nitrogen from reactant to nitric acid is

Which of the substances below can be used to extinguish a magnesium fire?

Lithium and magnesium have similar properties and their compounds have covalent character.True or false?

The term catenation refers to

The stable forms of chlorine,bromine,and iodine at 25C and 1 atm are

What two types of bonds involving hydrogen does diborane exhibit?

Which of the Group 15 elements is(are)a metalloid(s)?

When sulfur is produced by the Claus process,the starting material is

Aluminum oxide dissolves in aqueous base.What are the products of this reaction?

When aluminum sulfate is dissolved in water,is the resulting solution acidic or basic? Explain.

Which of the following is the anhydride of sulfurous acid?

The Quantum World

Quantum Mechanics in Action: Atoms

Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

Liquids and Solids

Inorganic Materials

Thermodynamics: the First Law

Thermodynamics: the Second and Third Laws

Physical Equilibria

Chemical Equilibria

Acids and Bases

Aqueous Equilibria

Electrochemistry

Chemical Kinetics

The Elements: the D Block

Nuclear Chemistry

Organic Chemistry I

Organic Chemistry II

Filters

Complete and balance XeF₄(s)+ H₂O(l)

Consider the reaction Fe(ClO₄)₃(aq)+ 6H₂O(l) Fe(H₂O)₆³⁺ + 3ClO₄^(aq) Which of the following statements are true?