Question 1

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

Accepted Answer

A)  Fe
B)  H
C)  K
D)  P
E)  OF) A) and D)
G) None of the above

Question 2

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) B) and E)

Question 3

Which of these hydrides is the most ionic?

Accepted Answer

A)  LiH
B)  NaH
C)  CH4
D)  NH3
E)  RbHF) A) and D)
G) A) and C)

Question 4

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)  XeF) A) and D)
G) None of the above

Question 5

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

Question 6

Write the chemical formula of the peroxide ion.

Accepted Answer

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

Question 7

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

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

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

Question 10

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

Accepted Answer

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

Question 11

Which of these species is not an acidic oxide?

Accepted Answer

A)  P4O10
B)  P4O6
C)  SO3
D)  CO
E)  SiO2F) C) and E)
G) C) and D)

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

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.F) A) and B)
G) A) and E)

Question 14

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 15

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 16

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

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

Write an equation for a laboratory preparation of nitrogen gas.

Accepted Answer

NH4NO<sub...

Question 19

Which of these reactions is an example of nitrogen fixation?

Accepted Answer

A)  2N2O  →	o→  2N2 + O2
B)  NH3 + H2O  →	o→ NH4+ + OH-
C)  N2 + O2  →	o→  2NO
D)  2NO2 + H2O  →	o→  HNO2 + HNO3
E)  2NO + O2  →	o→  2NO2 F) D) and E)
G) C) and D)

Question 20

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

Accepted Answer

A)  Na
B)  N
C)  B
D)  Ar
E)  PF) B) and E)
G) A) and D)

Exam 21: Nonmetallic Elements and Their Compounds

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedC3H8...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of these reactions is an example of nitrogen fixation?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Write an equation for a laboratory preparation of nitrogen gas.

Correct AnswerverifiedNH4NOView AnswerShow Answer

Which of these hydrides is the most ionic?

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

Correct AnswerverifiedShow Answer

When liquid phosphorus trichloride reacts with water, the products are

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

Chlorine gas is prepared commercially by

Correct AnswerverifiedShow Answer

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

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Write the chemical formula of the peroxide ion.

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Which of these species is not an acidic oxide?

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

Water gas is

Correct AnswerverifiedShow Answer

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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.

Correct Answer
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C₃H_8...
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Of the three oxides SiO₂, MgO, and P₄O₁₀, the most acidic oxide is P₄O₁₀.

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NH₄NO
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Alkali metal hydrides are very reactive with water, forming H₂ gas.

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Carborundum is silicon carbide, SiC(s).I...
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When phosphate rock, Ca₃(PO₄) ₂(s) , is converted to phosphorus,

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