Question 1

What is the voltage for the water-splitting reaction to produce hydrogen and oxygen from water? (Consult a table of standard potentials.)

Accepted Answer

The answer of What is the voltage for the water-splitting...

Question 2

The phase diagram for helium-4 indicates that

Accepted Answer

A) helium has three phases. 
B) helium has two liquid phases. 
C) helium can be liquefied at ordinary pressures. 
D) helium exists as He(g)and He(l)at about 2 K. 
E) helium exists only as a gas. 
A) helium has three phases. 
B) helium has two liquid phases. 
C) helium can be liquefied at ordinary pressures. 
D) helium exists as He(g)and He(l)at about 2 K. 
E) helium exists only as a gas.

Question 3

The equation for the hydrometallurgical extraction of silver is

Accepted Answer

A) Ag+(aq)+ Cl-(aq)$\rightarrow$ AgCl(s). 
B) Ag+(aq)+ 2S2O32-(aq)$\rightarrow$Ag(S2O3)23-(aq). 
C) Ag+(aq)+ 2CN-(aq)$\rightarrow$ Ag(CN)2-(aq). 
D) 2Ag(s)+ 2H+(aq)$\rightarrow$ Ag+(aq)+ H2(g). 
E) Ag+(aq)+ H2(g)$\rightarrow$ 2Ag(s)+ 2H+(aq). 
A) Ag+(aq)+ Cl-(aq)$\rightarrow$ AgCl(s). 
B) Ag+(aq)+ 2S2O32-(aq)$\rightarrow$Ag(S2O3)23-(aq). 
C) Ag+(aq)+ 2CN-(aq)$\rightarrow$ Ag(CN)2-(aq). 
D) 2Ag(s)+ 2H+(aq)$\rightarrow$ Ag+(aq)+ H2(g). 
E) Ag+(aq)+ H2(g)$\rightarrow$ 2Ag(s)+ 2H+(aq).

Question 4

What property of lithium makes the lithium-ion battery an excellent energy storage device?

Accepted Answer

A) Li+ has strong polarizing power. 
B) Lithium-ion is a good reducing agent. 
C) Lithium has a high density. 
D) Lithium has the most negative standard potential of all the elements. 
E) Li+ has a small radius. 
A) Li+ has strong polarizing power. 
B) Lithium-ion is a good reducing agent. 
C) Lithium has a high density. 
D) Lithium has the most negative standard potential of all the elements. 
E) Li+ has a small radius.

Question 5

Which Group 13 element is most likely to have an oxidation number of +1 in its compounds?

Accepted Answer

The answer of Which Group 13 element is most likely...

Question 6

In the reaction
Cu2+(aq)+ 4NH3(aq)$\rightarrow$ Cu(NH3)42+(aq)
the Lewis acid is ____________ and the Lewis base is ____________.

Accepted Answer

Cu<sup>2+<

Question 7

When aluminum sulfate is dissolved in water,is the resulting solution acidic or basic? Explain.

Accepted Answer

acidic; Al(OH₂)₆³⁺(aq)+

Question 8

The starting material for the production of sulfuric acid by the contact process is

Accepted Answer

A) H2S(g). 
B) H2S2O7(l). 
C) S(g). 
D) SO3(g). 
E) SO2(g). 
A) H2S(g). 
B) H2S2O7(l). 
C) S(g). 
D) SO3(g). 
E) SO2(g).

Question 9

Aluminum metal is produced by

Accepted Answer

A) reduction of Al2O3 with carbon. 
B) electrolysis of a molten mixture of alumina,Al2O3,and cryolite,Na3AlF6. 
C) treatment of Al2O3 with sodium hydroxide. 
D) the thermite reaction. 
E) electrolysis of brine containing Al2(SO4)3. 
A) reduction of Al2O3 with carbon. 
B) electrolysis of a molten mixture of alumina,Al2O3,and cryolite,Na3AlF6. 
C) treatment of Al2O3 with sodium hydroxide. 
D) the thermite reaction. 
E) electrolysis of brine containing Al2(SO4)3.

Question 10

Complete and balance
XeF4(s)+ H2O(l)$\rightarrow$

Accepted Answer

6XeF₄(s)+

Question 11

Which of the following has the largest atomic radius?

Accepted Answer

A) In 
B) Ga 
C) Ge 
D) Al 
A) In 
B) Ga 
C) Ge 
D) Al

Question 12

Saline carbides contain the anion(s)

Accepted Answer

A) C22-and C4-. 
B) CH22- 
C) HC2-. 
D) CO32- and HCO3-. 
E) CN- and N3- 
A) C22-and C4-. 
B) CH22- 
C) HC2-. 
D) CO32- and HCO3-. 
E) CN- and N3-

Question 13

What was the key idea that led to the synthesis of fluorine and oxygen compounds of xenon?

Accepted Answer

that the ionization

Question 14

Write the reaction for the disproportionation of nitrogen dioxide in water.

Accepted Answer

3NO<sub>2</sub>(g)+

Question 15

Both boric acid and nickel(II)chloride are weak acids in aqueous solutions.Explain.

Accepted Answer

Both form a Lewis ac

Question 16

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 17

When magnesium burns in air,what are the main products?

Accepted Answer

Magnesium

Question 18

What are the products of the reaction of calcium phosphide with dilute hydrochloric acid?

Accepted Answer

Phosphine

Question 19

Draw the structures of the phosphate,phosphite,and hypophosphite ions.

Accepted Answer

PO₄^3-,H-

Question 20

Sodium borohydride is an oxidizing agent.

Accepted Answer

A) True 
 B)False

What is the voltage for the water-splitting reaction to produce hydrogen and oxygen from water? (Consult a table of standard potentials.)

The phase diagram for helium-4 indicates that

The equation for the hydrometallurgical extraction of silver is

What property of lithium makes the lithium-ion battery an excellent energy storage device?

Which Group 13 element is most likely to have an oxidation number of +1 in its compounds?

In the reaction Cu²⁺(aq)+ 4NH₃(aq) $\rightarrow$ Cu(NH₃)₄²⁺(aq) the Lewis acid is and the Lewis base is .

When aluminum sulfate is dissolved in water,is the resulting solution acidic or basic? Explain.

The starting material for the production of sulfuric acid by the contact process is

Aluminum metal is produced by

Complete and balance XeF₄(s)+ H₂O(l) $\rightarrow$

Which of the following has the largest atomic radius?

Saline carbides contain the anion(s)

What was the key idea that led to the synthesis of fluorine and oxygen compounds of xenon?

Write the reaction for the disproportionation of nitrogen dioxide in water.

Both boric acid and nickel(II)chloride are weak acids in aqueous solutions.Explain.

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

When magnesium burns in air,what are the main products?

What are the products of the reaction of calcium phosphide with dilute hydrochloric acid?

Draw the structures of the phosphate,phosphite,and hypophosphite ions.

Sodium borohydride is an oxidizing agent.

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

Exam 16: The Elements: the Main Group Elements

What is the voltage for the water-splitting reaction to produce hydrogen and oxygen from water? (Consult a table of standard potentials.)

The phase diagram for helium-4 indicates that

The equation for the hydrometallurgical extraction of silver is

What property of lithium makes the lithium-ion battery an excellent energy storage device?

Which Group 13 element is most likely to have an oxidation number of +1 in its compounds?

In the reaction Cu2+(aq)+ 4NH3(aq) →\rightarrow→ Cu(NH3)42+(aq) the Lewis acid is ____________ and the Lewis base is ____________.

When aluminum sulfate is dissolved in water,is the resulting solution acidic or basic? Explain.

The starting material for the production of sulfuric acid by the contact process is

Aluminum metal is produced by

Complete and balance XeF4(s)+ H2O(l) →\rightarrow→

Which of the following has the largest atomic radius?

Saline carbides contain the anion(s)

What was the key idea that led to the synthesis of fluorine and oxygen compounds of xenon?

Write the reaction for the disproportionation of nitrogen dioxide in water.

Both boric acid and nickel(II)chloride are weak acids in aqueous solutions.Explain.

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

When magnesium burns in air,what are the main products?

What are the products of the reaction of calcium phosphide with dilute hydrochloric acid?

Draw the structures of the phosphate,phosphite,and hypophosphite ions.

Sodium borohydride is an oxidizing agent.

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

In the reaction Cu²⁺(aq)+ 4NH₃(aq) $\rightarrow$ Cu(NH₃)₄²⁺(aq) the Lewis acid is and the Lewis base is .

Complete and balance XeF₄(s)+ H₂O(l) $\rightarrow$