Question 1

Which of the following can be extracted by hydrometallurgical reduction of their ions with hydrogen? Consult a table of standard potentials.

Accepted Answer

A) Ni 
B) Fe 
C) Ag 
D) Zn 
E) Pb 
A) Ni 
B) Fe 
C) Ag 
D) Zn 
E) Pb

Question 2

Which of the alkaline earth metals does not form a saline hydride?

Accepted Answer

The answer of Which of the alkaline earth metals does...

Question 3

Which of the following exists mainly as cations in compounds?

Accepted Answer

A) P 
B) Ga 
C) As 
D) Si 
E) Sr 
A) P 
B) Ga 
C) As 
D) Si 
E) Sr

Question 4

Saline carbides contain the anion(s)

Accepted Answer

A) C22F1F1F1S1F1F1F10 and C4F1F1F1S1F1F1F10. 
B) CH22F1F1F1S1F1F1F10.  
C) HC2F1F1F1S1F1F1F10.  
D) CO32F1F1F1S1F1F1F10 and HCO3F1F1F1S1F1F1F10. 
E) CNF1F1F1S1F1F1F10 and N3F1F1F1S1F1F1F10. 
A) C22F1F1F1S1F1F1F10 and C4F1F1F1S1F1F1F10. 
B) CH22F1F1F1S1F1F1F10.  
C) HC2F1F1F1S1F1F1F10.  
D) CO32F1F1F1S1F1F1F10 and HCO3F1F1F1S1F1F1F10. 
E) CNF1F1F1S1F1F1F10 and N3F1F1F1S1F1F1F10.

Question 5

Which of the following pairs of elements both have acidic oxides?

Accepted Answer

A) Ca and As 
B) Mg and Al 
C) B and Li 
D) In and Sn 
E) P and Se 
A) Ca and As 
B) Mg and Al 
C) B and Li 
D) In and Sn 
E) P and Se

Question 6

Phosphorus pentachloride reacts with water to give

Accepted Answer

A) H3PO3(s)and HCl(g). 
B) H3PO4(l)and HClO(aq). 
C) H3PO3(s)and Cl2(g). 
D) H3PO4(l)and Cl2(g). 
E) H3PO4(l)and HCl(g). 
A) H3PO3(s)and HCl(g). 
B) H3PO4(l)and HClO(aq). 
C) H3PO3(s)and Cl2(g). 
D) H3PO4(l)and Cl2(g). 
E) H3PO4(l)and HCl(g).

Question 7

Hydrazine is produced by the reaction of

Accepted Answer

A) nitric acid with hygrogen. 
B) nitrogen dioxide with water. 
C) nitrogen with water vapor at high pressure. 
D) ammonia with alkaline hypochlorite solution. 
E) ammonia with hydrogen. 
A) nitric acid with hygrogen. 
B) nitrogen dioxide with water. 
C) nitrogen with water vapor at high pressure. 
D) ammonia with alkaline hypochlorite solution. 
E) ammonia with hydrogen.

Question 8

The first reaction in the Ostwald process for the synthesis of nitric acid is the

Accepted Answer

A) oxidation of ammonia to nitrogen dioxide. 
B) reduction of ammonia with copper. 
C) decomposition of ammonia to nitrogen and hydrogen. 
D) production of NH3(l). 
E) oxidation of ammonia to nitrogen oxide. 
A) oxidation of ammonia to nitrogen dioxide. 
B) reduction of ammonia with copper. 
C) decomposition of ammonia to nitrogen and hydrogen. 
D) production of NH3(l). 
E) oxidation of ammonia to nitrogen oxide.

Question 9

What is the shape of BrF5?

Accepted Answer

A) Seesaw 
B) Square planar 
C) Square pyramidal 
D) Octahedral 
E) Trigonal bipyramidal 
A) Seesaw 
B) Square planar 
C) Square pyramidal 
D) Octahedral 
E) Trigonal bipyramidal

Question 10

The allotropes of carbon are graphite,diamond,and the fullerenes.These are all network solids.True or false?

Accepted Answer

A) True 
 B)False

Question 11

Which of the following has the strongest molar bond enthalpy?

Accepted Answer

A) H-F 
B) H-At 
C) H-Cl 
D) H-I 
E) H-Br 
A) H-F 
B) H-At 
C) H-Cl 
D) H-I 
E) H-Br

Question 12

The formula of boric acid written as a Lewis acid is

Accepted Answer

A) B(OH)3.  
B) HB(OH)3.  
C) HB(OH)4.  
D) B(OH)4F1F1F1S1F1F1F10.  
E) HB(OH)2.  
A) B(OH)3.  
B) HB(OH)3.  
C) HB(OH)4.  
D) B(OH)4F1F1F1S1F1F1F10.  
E) HB(OH)2.

Question 13

White phosphorus

Accepted Answer

A) is an amorphous substance. 
B) is not very toxic. 
C) is very unreactive. 
D) consists of large, random aggregates of phosphorus atoms. 
E) consists of tetrahedral P4 molecules. 
A) is an amorphous substance. 
B) is not very toxic. 
C) is very unreactive. 
D) consists of large, random aggregates of phosphorus atoms. 
E) consists of tetrahedral P4 molecules.

Question 14

Dinitrogen trioxide can be prepared by

Accepted Answer

A) reacting hydrazine with water. 
B) reacting ammonia with water. 
C) dehydrating nitrous acid. 
D) dehydrating nitric acid. 
E) reacting N2O with O2. 
A) reacting hydrazine with water. 
B) reacting ammonia with water. 
C) dehydrating nitrous acid. 
D) dehydrating nitric acid. 
E) reacting N2O with O2.

Question 15

Which of the following reacts only as a reducing agent?

Accepted Answer

A) P4  
B) NO2F1F1F1S1F1F1F10  
C) F2  
D) NH3  
E) S8  
A) P4  
B) NO2F1F1F1S1F1F1F10  
C) F2  
D) NH3  
E) S8

Question 16

Xenon can exhibit all the following oxidation numbers in its compounds.

Accepted Answer

A) +2, +4, +6, +8. 
B) 0, +2, +3. 
C) +2, +4, +5. 
D) +2, +4, +6, +7. 
E) +2, +3, +4, +5, +6. 
A) +2, +4, +6, +8. 
B) 0, +2, +3. 
C) +2, +4, +5. 
D) +2, +4, +6, +7. 
E) +2, +3, +4, +5, +6.

Question 17

Which of the following can act as Lewis acid(s)?

Accepted Answer

A) NO. 
B) SO3.  
C) CO2. 
D) Na2O.  
E) A through C can.  
A) NO. 
B) SO3.  
C) CO2. 
D) Na2O.  
E) A through C can.

Question 18

All of the following are silicon-oxygen compounds except

Accepted Answer

A) asbestos. 
B) quartz. 
C) talc. 
D) diamond. 
E) mica. 
A) asbestos. 
B) quartz. 
C) talc. 
D) diamond. 
E) mica.

Question 19

The electron affinities of elements are always positive.True or false?

Accepted Answer

A) True 
 B)False

Question 20

Aqueous solutions of phosphine,PH3,

Accepted Answer

A) are neutral. 
B) contain the PH2F1F1F1S1F1F1F10(aq)ion exclusively. 
C) are basic. 
D) readily form PH4+(aq). 
E) cannot exist. 
A) are neutral. 
B) contain the PH2F1F1F1S1F1F1F10(aq)ion exclusively. 
C) are basic. 
D) readily form PH4+(aq). 
E) cannot exist.

Which of the following can be extracted by hydrometallurgical reduction of their ions with hydrogen? Consult a table of standard potentials.

Which of the alkaline earth metals does not form a saline hydride?

Which of the following exists mainly as cations in compounds?

Saline carbides contain the anion(s)

Which of the following pairs of elements both have acidic oxides?

Phosphorus pentachloride reacts with water to give

Hydrazine is produced by the reaction of

The first reaction in the Ostwald process for the synthesis of nitric acid is the

What is the shape of BrF₅?

The allotropes of carbon are graphite,diamond,and the fullerenes.These are all network solids.True or false?

Which of the following has the strongest molar bond enthalpy?

The formula of boric acid written as a Lewis acid is

White phosphorus

Dinitrogen trioxide can be prepared by

Which of the following reacts only as a reducing agent?

Xenon can exhibit all the following oxidation numbers in its compounds.

Which of the following can act as Lewis acid(s)?

All of the following are silicon-oxygen compounds except

The electron affinities of elements are always positive.True or false?

Aqueous solutions of phosphine,PH₃,

The Quantum World

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Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

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Inorganic Materials

Thermodynamics: the First Law

Thermodynamics: the Second and Third Laws

Physical Equilibria

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Exam 16: The Elements: the Main Group Elements

Which of the following can be extracted by hydrometallurgical reduction of their ions with hydrogen? Consult a table of standard potentials.

Which of the alkaline earth metals does not form a saline hydride?

Which of the following exists mainly as cations in compounds?

Saline carbides contain the anion(s)

Which of the following pairs of elements both have acidic oxides?

Phosphorus pentachloride reacts with water to give

Hydrazine is produced by the reaction of

The first reaction in the Ostwald process for the synthesis of nitric acid is the

What is the shape of BrF5?

The allotropes of carbon are graphite,diamond,and the fullerenes.These are all network solids.True or false?

Which of the following has the strongest molar bond enthalpy?

The formula of boric acid written as a Lewis acid is

White phosphorus

Dinitrogen trioxide can be prepared by

Which of the following reacts only as a reducing agent?

Xenon can exhibit all the following oxidation numbers in its compounds.

Which of the following can act as Lewis acid(s)?

All of the following are silicon-oxygen compounds except

The electron affinities of elements are always positive.True or false?

Aqueous solutions of phosphine,PH3,

The Quantum World

Quantum Mechanics in Action: Atoms

Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

Liquids and Solids

Inorganic Materials

Thermodynamics: the First Law

Thermodynamics: the Second and Third Laws

Physical Equilibria

Chemical Equilibria

Acids and Bases

Aqueous Equilibria

Electrochemistry

Chemical Kinetics

The Elements: the D Block

Nuclear Chemistry

Organic Chemistry I

Organic Chemistry II

Filters

What is the shape of BrF₅?

Aqueous solutions of phosphine,PH₃,