Question 1

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 F) A) and B)
G) None of the above

Question 2

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 decideF) A) and E)
G) B) and E)

Question 3

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 4

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.F) None of the above
G) D) and E)

Question 5

Select basic oxide from the choices given.

Accepted Answer

A)  CaO
B)  SiO2
C)  CO2
D)  P4O6
E)  H2O2F) B) and E)
G) A) and B)

Question 6

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

Accepted Answer

A)  HCl
B)  Cl2
C)  NaCl
D)  NaClO
E)  NaClO4F) B) and C)
G) C) and D)

Question 7

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.F) A) and E)
G) A) and D)

Question 8

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.F) A) and B)
G) A) and C)

Question 9

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)  NH3F) All of the above
G) A) and C)

Question 10

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 11

Which of the following substances is a peroxide?

Accepted Answer

A)  KO2
B)  Na2O2
C)  CO2
D)  CaO
E)  Al2O3F) A) and B)
G) A) and E)

Question 12

Write the chemical formula of the oxide ion.

Accepted Answer

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

Question 13

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) .F) D) and E)
G) C) and D)

Question 14

A chemical formula of the carbide ion is

Accepted Answer

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

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

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...

Question 17

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 IIIF) B) and E)
G) A) and B)

Question 18

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

Accepted Answer

A)  HNO3
B)  H3PO4
C)  H2
D)  H2SO4
E)  HClO3F) B) and C)
G) C) and D)

Question 19

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 20

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)  SrH2F) C) and D)
G) B) and E)

Exam 22: Nonmetallic Elements and Their Compounds

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

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Select basic oxide from the choices given.

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

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

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Which of these reactions is an example of nitrogen fixation?

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The main commercial source of bromine is

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

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Which of these aqueous solutions has the highest pH?

Correct AnswerverifiedShow Answer

The term catenation describes the

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedCarborundum is silicon carbide, SiC(s).I...View AnswerShow Answer

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

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

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

Correct AnswerverifiedThe cyanide ion reacts with acid to form...View AnswerShow Answer

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

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Write the chemical formula of the oxide ion.

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A chemical formula of the carbide ion is

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

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Which of the following substances is a peroxide?

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

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Chlorine gas is prepared commercially by

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

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Carborundum is silicon carbide, SiC(s).I...
View Answer

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The cyanide ion reacts with acid to form...
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Of the three oxides SiO₂, MgO, and P₄O₁₀, the most acidic oxide is P₄O₁₀.

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