Question 1

Which of these elements occupies a position on the periodic table that is not entirely consistent with its chemical properties?

Accepted Answer

A) H 
B) He 
C) Ar 
D) Al 
E) U 
A) H 
B) He 
C) Ar 
D) Al 
E) U

Question 2

Write the chemical formula of the peroxide ion.

Accepted Answer

The answer of Write the chemical formula of the peroxide...

Question 3

When in the liquid state, which one of these substances resembles water, insofar as it is a solvent for many electrolytes and even undergoes autoionization as water does?

Accepted Answer

A) N2 
B) Cl2 
C) NH3 
D) N2O 
E) Xe 
A) N2 
B) Cl2 
C) NH3 
D) N2O 
E) Xe

Question 4

Phosphoric acid is the most important of the phosphorus oxoacids. Industrially, phosphoric acid is prepared by

Accepted Answer

A) the Ostwald process. 
B) the Haber process. 
C) the reaction of phosphate rock with sulfuric acid. 
D) the reaction of P4O10 with water. 
E) the Frasch process. 
A) the Ostwald process. 
B) the Haber process. 
C) the reaction of phosphate rock with sulfuric acid. 
D) the reaction of P4O10 with water. 
E) the Frasch process.

Question 5

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 6

Hydrogen plays an important role in many industrial processes. Write a balanced chemical equation for its production by the reaction of propane (C3H8, obtained from natural gas)and steam.

Accepted Answer

C3H8

Question 7

What is carborundum, and how is it prepared.What physical property of carborundum makes it a useful material?

Accepted Answer

Carborundum is silicon carbide, SiC(s).I

Question 8

The chemistry of fluorine differs in many ways from that of the rest of the halogens.

Accepted Answer

A) True 
 B)False

Question 9

Which of these reactions is an example of nitrogen fixation?

Accepted Answer

A) 2N2O $\to$ 2N2 + O2 
B) NH3 + H2O $\to$NH4+ + OH- 
C) N2 + O2 $\to$ 2NO 
D) 2NO2 + H2O $\to$ HNO2 + HNO3 
E) 2NO + O2 $\to$ 2NO2 
A) 2N2O $\to$ 2N2 + O2 
B) NH3 + H2O $\to$NH4+ + OH- 
C) N2 + O2 $\to$ 2NO 
D) 2NO2 + H2O $\to$ HNO2 + HNO3 
E) 2NO + O2 $\to$ 2NO2

Question 10

Water gas is

Accepted Answer

A) H2O(g) 
B) an aqueous solution of various hydrocarbons. 
C) a mixture of CO(g)and H2(g). 
D) a mixture of CO2(g)and H2O(g). 
E) a dilute solution of H2CO3(aq)formed by dissolving CO2(g)in water. 
A) H2O(g) 
B) an aqueous solution of various hydrocarbons. 
C) a mixture of CO(g)and H2(g). 
D) a mixture of CO2(g)and H2O(g). 
E) a dilute solution of H2CO3(aq)formed by dissolving CO2(g)in water.

Question 11

Which of these industrial chemicals is produced in the greatest amount annually?

Accepted Answer

A) HNO3 
B) H3PO4 
C) H2 
D) H2SO4 
E) HClO3 
A) HNO3 
B) H3PO4 
C) H2 
D) H2SO4 
E) HClO3

Question 12

Which of these hydrides is the most ionic?

Accepted Answer

A) LiH 
B) NaH 
C) CH4 
D) NH3 
E) RbH 
A) LiH 
B) NaH 
C) CH4 
D) NH3 
E) RbH

Question 13

Alkali metal hydrides are very reactive with water, forming H2 gas.

Accepted Answer

A) True 
 B)False

Question 14

Which one of these species exists as a diatomic element at room temperature?

Accepted Answer

A) Na 
B) N 
C) B 
D) Ar 
E) P 
A) Na 
B) N 
C) B 
D) Ar 
E) P

Question 15

Write an equation for a laboratory preparation of nitrogen gas.

Accepted Answer

NH4NO<sub

Question 16

Which of these species is not an acidic oxide?

Accepted Answer

A) P4O10 
B) P4O6 
C) SO3 
D) CO 
E) SiO2 
A) P4O10 
B) P4O6 
C) SO3 
D) CO 
E) SiO2

Question 17

When phosphate rock, Ca3(PO4)2(s), is converted to phosphorus,

Accepted Answer

A) one of the products of the reaction is water. 
B) sulfuric acid is added to generate insoluble calcium sulfate. 
C) hydrogen is used to reduce the phosphate to phosphorus. 
D) silica is added to form a calcium silicate slag. 
E) oxygen must be added to prevent reaction of P4. 
A) one of the products of the reaction is water. 
B) sulfuric acid is added to generate insoluble calcium sulfate. 
C) hydrogen is used to reduce the phosphate to phosphorus. 
D) silica is added to form a calcium silicate slag. 
E) oxygen must be added to prevent reaction of P4.

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

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 20

Chlorine gas is prepared commercially by

Accepted Answer

A) electrolysis of carbon tetrachloride. 
B) oxidation of chloride ion with F2(g). 
C) electrolysis of NaCl(aq). 
D) oxidation of chloride ion with Br2(aq). 
E) electrolysis of AlCl3(aq). 
A) electrolysis of carbon tetrachloride. 
B) oxidation of chloride ion with F2(g). 
C) electrolysis of NaCl(aq). 
D) oxidation of chloride ion with Br2(aq). 
E) electrolysis of AlCl3(aq).

Exam 21: Nonmetallic Elements and Their Compounds

Which of these elements occupies a position on the periodic table that is not entirely consistent with its chemical properties?

Write the chemical formula of the peroxide ion.

When in the liquid state, which one of these substances resembles water, insofar as it is a solvent for many electrolytes and even undergoes autoionization as water does?

Phosphoric acid is the most important of the phosphorus oxoacids. Industrially, phosphoric acid is prepared by

When liquid phosphorus trichloride reacts with water, the products are

Hydrogen plays an important role in many industrial processes. Write a balanced chemical equation for its production by the reaction of propane (C3H8, obtained from natural gas)and steam.

What is carborundum, and how is it prepared.What physical property of carborundum makes it a useful material?

The chemistry of fluorine differs in many ways from that of the rest of the halogens.

Which of these reactions is an example of nitrogen fixation?

Water gas is

Which of these industrial chemicals is produced in the greatest amount annually?

Which of these hydrides is the most ionic?

Alkali metal hydrides are very reactive with water, forming H2 gas.

Which one of these species exists as a diatomic element at room temperature?

Write an equation for a laboratory preparation of nitrogen gas.

Which of these species is not an acidic oxide?

When phosphate rock, Ca3(PO4)2(s), is converted to phosphorus,

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

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

Chlorine gas is prepared commercially by

Chemistry: The Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solution

Gases

Thermo-Chemistry

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 Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Chemistry in the Atmosphere

Entropy, Free Energy, and Equilibrium

Electrochemistry

Metallurgy and the Chemistry of Metals

Transition Metal Chemistry and Coordination Compounds

Nuclear Chemistry

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

Hydrogen plays an important role in many industrial processes. Write a balanced chemical equation for its production by the reaction of propane (C₃H₈, obtained from natural gas)and steam.

Alkali metal hydrides are very reactive with water, forming H₂ gas.

When phosphate rock, Ca₃(PO₄)₂(s), is converted to phosphorus,

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