Question 1

Hydrogen plays an important role in many industrial processes.Write a balanced chemical equation for its production by the water gas reaction.

Accepted Answer

C(s)+ H₂O(g...

Question 2

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

Accepted Answer

A) True 
 B)False

Question 3

Ozone (O3) and oxygen gas (O2) are examples of

Accepted Answer

A)  isotopes.
B)  allotropes.
C)  polymorphs.
D)  alloys.
E)  amphoterism.F) D) and E)
G) A) and D)

Question 4

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

Question 5

In which of the following compounds is nitrogen in a positive oxidation state?

Accepted Answer

A)  NH3
B)  N2H4
C)  NH2OH
D)  N2
E)  NOF) None of the above
G) C) and D)

Question 6

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

Accepted Answer

A)  PCl5
B)  NO2
C)  H2O2
D)  KH
E)  NH3F) A) and D)
G) A) and B)

Question 7

In which of the following compounds is sulfur in a positive oxidation state?

Accepted Answer

A)  H2S
B)  S8
C)  CaS
D)  MnS
E)  SO3F) A) and C)
G) B) and C)

Question 8

Choose the true statement concerning the relative acid strengths of H2SO4 and H2SO3.

Accepted Answer

A)  H2SO4 is a stronger acid than H2SO3 because the S in H2SO4 has a more positive oxidation state than the S in H2SO3 which influences the polarity of the O-H bonds.
B)  H2SO4 is a weaker acid than H2SO3 because the S in H2SO4 has a more positive oxidation state than the S in H2SO3 which influences the polarity of the O-H bonds.
C)  H2SO4 is a stronger acid than H2SO3 because the S in H2SO4 has a less positive oxidation state than the S in H2SO3 which influences the polarity of the O-H bonds.
D)  H2SO4 is a weaker acid than H2SO3 because the S in H2SO4 has a more negative oxidation state than the S in H2SO3 which influences the polarity of the O-H bonds.E) A) and B)
F) B) and D)

Question 9

Choose the formula that does not represent a stable allotrope.

Accepted Answer

A)  N2
B)  S8
C)  O2
D)  P2
E)  I2F) A) and B)
G) A) and C)

Question 10

P4O6 and P4O10 are allotropes of phosphorus.

Accepted Answer

A) True 
 B)False

Question 11

Which one of these elements is not a gas at room temperature?

Accepted Answer

A)  chlorine
B)  fluorine
C)  nitrogen
D)  oxygen
E)  sulfurF) C) and E)
G) B) and C)

Question 12

Write the chemical formula of the superoxide ion.

Accepted Answer

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

Exam 22: Nonmetallic Elements and Their Compounds

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

Correct Answer
verified

In which of the following compounds is sulfur in a positive oxidation state?

Correct Answer
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Which one of the following compounds can react with water to form hydrogen gas?

Correct Answer
verified

Which one of these elements is not a gas at room temperature?

Correct Answer
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Hydrogen plays an important role in many industrial processes.Write a balanced chemical equation for its production by the water gas reaction.

Correct Answer
verified
C(s)+ H₂O(g...
View Answer

Choose the true statement concerning the relative acid strengths of H₂SO₄and H₂SO_3.

Correct Answer
verified

In which of the following compounds is nitrogen in a positive oxidation state?

Correct Answer
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Write the chemical formula of the superoxide ion.

Correct Answer
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Ozone (O₃) and oxygen gas (O₂) are examples of

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

Correct Answer
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P₄O₆ and P₄O₁₀ are allotropes of phosphorus.

Correct Answer
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Choose the formula that does not represent a stable allotrope.

Correct Answer
verified

Exam 22: Nonmetallic Elements and Their Compounds

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

Correct AnswerverifiedShow Answer

In which of the following compounds is sulfur in a positive oxidation state?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which one of these elements is not a gas at room temperature?

Correct AnswerverifiedShow Answer

Hydrogen plays an important role in many industrial processes.Write a balanced chemical equation for its production by the water gas reaction.

Correct AnswerverifiedC(s)+ H2O(g...View AnswerShow Answer

Choose the true statement concerning the relative acid strengths of H2SO4 and H2SO3.

Correct AnswerverifiedShow Answer

In which of the following compounds is nitrogen in a positive oxidation state?

Correct AnswerverifiedShow Answer

Write the chemical formula of the superoxide ion.

Correct AnswerverifiedShow Answer

Ozone (O3) and oxygen gas (O2) are examples of

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

P4O6 and P4O10 are allotropes of phosphorus.

Correct AnswerverifiedShow Answer

Choose the formula that does not represent a stable allotrope.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C(s)+ H₂O(g...
View Answer

Choose the true statement concerning the relative acid strengths of H₂SO₄and H₂SO_3.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Ozone (O₃) and oxygen gas (O₂) are examples of

Correct Answer
verified

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

Correct Answer
verified

P₄O₆ and P₄O₁₀ are allotropes of phosphorus.

Correct Answer
verified

Correct Answer
verified