Question 1

Write the formula for the binary hydride you would expect calcium to form.

Accepted Answer

The answer of Write the formula for the binary hydride...

Question 2

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 3

Why is it especially dangerous to mix cyanide salts with acids? Write a chemical equation to illustrate your answer.

Accepted Answer

The cyanide ion reacts with acid to form

Question 4

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 5

The Ostwald process is the main method for the manufacture of nitric acid.In the first step of this process

Accepted Answer

A) nitrogen and hydrogen react to form NH3. 
B) ammonia is burned in O2 to generate N2 and H2O. 
C) nitrogen and oxygen react to form NO2. 
D) nitrogen and oxygen react to form NO. 
E) ammonia is burned with O2 to generate NO and H2O. 
A) nitrogen and hydrogen react to form NH3. 
B) ammonia is burned in O2 to generate N2 and H2O. 
C) nitrogen and oxygen react to form NO2. 
D) nitrogen and oxygen react to form NO. 
E) ammonia is burned with O2 to generate NO and H2O.

Question 6

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 7

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).

Question 8

Which of the following substances is a peroxide?

Accepted Answer

A) KO2 
B) Na2O2 
C) CO2 
D) CaO 
E) Al2O3 
A) KO2 
B) Na2O2 
C) CO2 
D) CaO 
E) Al2O3

Question 9

The term catenation describes the

Accepted Answer

A) tendency of carbon atoms to form cations in the presence of alkali metals. 
B) process of creating synthetic gas from coal. 
C) extraction of precious metals with sodium or potassium cyanide. 
D) ability of carbon atoms to form long chains and rings. 
E) interaction of Group 4A elements with Group 8A elements at high pressures and temperatures to form coordination compounds. 
A) tendency of carbon atoms to form cations in the presence of alkali metals. 
B) process of creating synthetic gas from coal. 
C) extraction of precious metals with sodium or potassium cyanide. 
D) ability of carbon atoms to form long chains and rings. 
E) interaction of Group 4A elements with Group 8A elements at high pressures and temperatures to form coordination compounds.

Question 10

Which of these substances is the active ingredient in ordinary household bleach?

Accepted Answer

A) HCl 
B) Cl2 
C) NaCl 
D) NaClO 
E) NaClO4 
A) HCl 
B) Cl2 
C) NaCl 
D) NaClO 
E) NaClO4

Question 11

Write the chemical formula of the oxide ion.

Accepted Answer

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

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

Based on the following options, select the substance with hydrogen in the +1 oxidation state.

Accepted Answer

A) KH 
B) CH4 
C) H2 
D) AlH3 
E) SrH2 
A) KH 
B) CH4 
C) H2 
D) AlH3 
E) SrH2

Question 14

A chemical formula of the carbide ion is

Accepted Answer

A) Si4- 
B) C2- 
C) C22- 
D) CN- 
E) C3- 
A) Si4- 
B) C2- 
C) C22- 
D) CN- 
E) C3-

Question 15

Determine all of the covalent 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 16

Which one of the following compounds can react with water to form oxygen gas?

Accepted Answer

A) PCl5 
B) NO2 
C) H2O2 
D) KH 
E) NH3 
A) PCl5 
B) NO2 
C) H2O2 
D) KH 
E) NH3

Question 17

Which of these reactions is an example of nitrogen fixation?

Accepted Answer

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

Question 18

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 19

The main commercial source of bromine is

Accepted Answer

A) silver bromide ore. 
B) seawater. 
C) the Frasch process. 
D) phosphate rock. 
E) the Ostwald process. 
A) silver bromide ore. 
B) seawater. 
C) the Frasch process. 
D) phosphate rock. 
E) the Ostwald process.

Question 20

Write a balanced chemical equation to show the production of chlorine by the chlor-alkali process.

Accepted Answer

The answer of Write a balanced chemical equation to show...

Exam 22: Nonmetallic Elements and Their Compounds

Write the formula for the binary hydride you would expect calcium to form.

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

Why is it especially dangerous to mix cyanide salts with acids? Write a chemical equation to illustrate your answer.

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

The Ostwald process is the main method for the manufacture of nitric acid.In the first step of this process

Which of these aqueous solutions has the highest pH?

Chlorine gas is prepared commercially by

Which of the following substances is a peroxide?

The term catenation describes the

Which of these substances is the active ingredient in ordinary household bleach?

Write the chemical formula of the oxide ion.

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

Based on the following options, select the substance with hydrogen in the +1 oxidation state.

A chemical formula of the carbide ion is

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

Which one of the following compounds can react with water to form oxygen gas?

Which of these reactions is an example of nitrogen fixation?

Select basic oxide from the choices given.

The main commercial source of bromine is

Write a balanced chemical equation to show the production of chlorine by the chlor-alkali process.

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 Orbitals

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 Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

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

Determine all of the covalent hydrides from the compounds listed below. I.CaH₂II.H₂S III.SiH₄