Question 1

Write a balanced half equation for the following couple: O2(g)| OH-(aq) (basic)

Accepted Answer

A) O2(g)+ OH-(aq)+ 4 e- → 2 H2O(l) 
B) O2(g)+ 2 H2O(l)+ 4 e- → 4 OH-(aq)  
C) O2(g)+ H2O(l)+ e- → 2 OH-(aq)  
D) O2(g)+ 2 H2O(l)→ 4 OH-(aq)+ 4 e-  
E) O2(g)+ 2 H2O(l)+ 4 e- → 8 OH-(aq)  
A) O2(g)+ OH-(aq)+ 4 e- → 2 H2O(l) 
B) O2(g)+ 2 H2O(l)+ 4 e- → 4 OH-(aq)  
C) O2(g)+ H2O(l)+ e- → 2 OH-(aq)  
D) O2(g)+ 2 H2O(l)→ 4 OH-(aq)+ 4 e-  
E) O2(g)+ 2 H2O(l)+ 4 e- → 8 OH-(aq)  B

Question 2

Which name/formula combination is INCORRECT?

Accepted Answer

A) tetrathionate/S4O62-  
B) sulfurous acid/H2SO3  
C) thiosulfate/S2O32-  
D) calcium sulfite/CaSO4  
E) sodium sulfide/Na2S 
A) tetrathionate/S4O62-  
B) sulfurous acid/H2SO3  
C) thiosulfate/S2O32-  
D) calcium sulfite/CaSO4  
E) sodium sulfide/Na2S D

Question 3

Choose the INCORRECT statement.

Accepted Answer

A) Sb and As are usually referred to as metalloids. 
B) Nitrogen is obtained by fractional distillation of liquefied air. 
C) Phosphorus is important in fertilizers. 
D) As and Sb are used in semiconductor materials. 
E) Nitrides are compounds of nitrogen in the 3+ oxidation state. 
A) Sb and As are usually referred to as metalloids. 
B) Nitrogen is obtained by fractional distillation of liquefied air. 
C) Phosphorus is important in fertilizers. 
D) As and Sb are used in semiconductor materials. 
E) Nitrides are compounds of nitrogen in the 3+ oxidation state. E

Question 4

Choose the INCORRECT statement.

Accepted Answer

A) Industrial smog consists of ash,smoke,SO2(g)and H2SO4 mist. 
B) Group 15 (5
A) is interesting because it has both nonmetals and metals in the family. 
C) The Group 15 (5
A) electron configuration is ns2np3. 
D) As,Sb,and Si occur in the -3 oxidation state. 
E) P,Ar and Sb exhibit allotropy. 
A) Industrial smog consists of ash,smoke,SO2(g)and H2SO4 mist. 
B) Group 15 (5
A) is interesting because it has both nonmetals and metals in the family. 
C) The Group 15 (5
A) electron configuration is ns2np3. 
D) As,Sb,and Si occur in the -3 oxidation state. 
E) P,Ar and Sb exhibit allotropy.

Question 5

In the compound dinitrogen monoxide,sometimes used as a dental anesthetic,the oxidation state of nitrogen is ________.

Accepted Answer

A) +1 
B) -1 
C) +2 
D) -2 
E) 0 
A) +1 
B) -1 
C) +2 
D) -2 
E) 0

Question 6

What is the correct completion of the reaction: NaF + HC2H3O2 →

Accepted Answer

A) NaF + HC2H3O2 → NaC2H3 + HFO2  
B) NaF + HC2H3O2 ⇌ HF + NaC2H3O2  
C) NaF + HC2H3O2 ⇌ NaC2O2 + H4F 
D) NaF + HC2H3O2 → NaH3O2 + HFC2  
E) NaF + HC2H3O2 → no reaction 
A) NaF + HC2H3O2 → NaC2H3 + HFO2  
B) NaF + HC2H3O2 ⇌ HF + NaC2H3O2  
C) NaF + HC2H3O2 ⇌ NaC2O2 + H4F 
D) NaF + HC2H3O2 → NaH3O2 + HFC2  
E) NaF + HC2H3O2 → no reaction

Question 7

Which of the following has the lowest boiling point?

Accepted Answer

A) bromine 
B) fluorine 
C) iodine 
D) chlorine 
E) astatine 
A) bromine 
B) fluorine 
C) iodine 
D) chlorine 
E) astatine

Question 8

How much H2 (in liters)is produced at 65 °C and 670.torr by the reaction of 75.7 g of zinc?
Zn(s)+ 2 H+(aq)→ Zn2+(aq)+ H2(g)

Accepted Answer

A) 188 L 
B) 2.33 L 
C) 9.22 L 
D) 36.4 L 
E) 95.8 L 
A) 188 L 
B) 2.33 L 
C) 9.22 L 
D) 36.4 L 
E) 95.8 L

Question 9

Ozone and "ordinary" oxygen are examples of:

Accepted Answer

A) allotropes 
B) isotopes 
C) isomers 
D) phalaropes 
E) tropomers 
A) allotropes 
B) isotopes 
C) isomers 
D) phalaropes 
E) tropomers

Question 10

The VSEPR theory predicts molecular shapes for the noble gas compounds.Which of these is correct?
I.XeF2 is linear.
II.XeOF2 is T-shaped.
III.XeF4 is square planar.

Accepted Answer

A) I,II and III 
B) I and II 
C) I only 
D) II only 
E) III only 
A) I,II and III 
B) I and II 
C) I only 
D) II only 
E) III only

Question 11

Give the molecular shape of NO3-.

Accepted Answer

A) trigonal pyramidal 
B) trigonal planar 
C) tetrahedral 
D) linear 
E) octahedral 
A) trigonal pyramidal 
B) trigonal planar 
C) tetrahedral 
D) linear 
E) octahedral

Question 12

The compound of which P4O6 is the anhydride is ________.

Accepted Answer

A) HPO3  
B) H3PO4  
C) H3PO3  
D) H4P2O7  
E) H2P2O7  
A) HPO3  
B) H3PO4  
C) H3PO3  
D) H4P2O7  
E) H2P2O7

Question 13

The electron group geometry for XeF2 is ________.

Accepted Answer

A) trigonal planar 
B) trigonal bipyramid 
C) bent 
D) linear 
E) trigonal pyramidal 
A) trigonal planar 
B) trigonal bipyramid 
C) bent 
D) linear 
E) trigonal pyramidal

Question 14

Choose the INCORRECT name/formula combination.

Accepted Answer

A) hydrogen chloride HClO 
B) sodium hydride NaH 
C) sodium hydrogen carbonate NaHCO3  
D) calcium hydride CaH2  
E) dihydrogen H2  
A) hydrogen chloride HClO 
B) sodium hydride NaH 
C) sodium hydrogen carbonate NaHCO3  
D) calcium hydride CaH2  
E) dihydrogen H2

Question 15

Write a balanced half equation for the following couple: 
  S(s)(acidic)

Accepted Answer

A) SO42-(aq) + 2 H+(aq) + 2 e- → S(s)+ H2O(l) 
B) SO42-(aq) + H2O(l)+ 4e- → S(s)+ 2 H+(aq)  
C) SO42-(aq) + 2 H+(aq) + 2 e- → S(s)+ H2SO4(aq)  
D) SO42-(aq) + 8 H+(aq) + 6 e- → S(s)+ 4 H2O(l) 
E) SO42-(aq) + 8 H+(aq) → S(s)+ 4 H2O(l)+ 6 e-  
A) SO42-(aq) + 2 H+(aq) + 2 e- → S(s)+ H2O(l) 
B) SO42-(aq) + H2O(l)+ 4e- → S(s)+ 2 H+(aq)  
C) SO42-(aq) + 2 H+(aq) + 2 e- → S(s)+ H2SO4(aq)  
D) SO42-(aq) + 8 H+(aq) + 6 e- → S(s)+ 4 H2O(l) 
E) SO42-(aq) + 8 H+(aq) → S(s)+ 4 H2O(l)+ 6 e-

Question 16

Pyrosulfuric is also called disulfuric H2S2O7.Pyrosulfuric acid may be synthesized by dissolving SO3 in ________.

Accepted Answer

A) H2SO4  
B) H2S2O8  
C) H2SO3  
D) H2O 
E) H2S2O7  
A) H2SO4  
B) H2S2O8  
C) H2SO3  
D) H2O 
E) H2S2O7

Question 17

One of the natural processes that destroys ozone in the atmosphere is postulated to consist of two steps:
O3(g)+ UV radiation → O2(g)+ O(g)
O3(g)+ O(g)→ 2 O2(g)
The standard enthalpies of formation for ozone and for atomic oxygen are +142.7 kJ/mol and +249.2 kJ/mol,respectively.What would be the standard energy change associated with the combination of ozone and atomic oxygen to form 50.0 L of molecular oxygen,measured at -75 °C and 0.12 atm?

Accepted Answer

A) -38 kJ 
B) -72 kJ 
C) -150 kJ 
D) -196 kJ 
E) -600 kJ 
A) -38 kJ 
B) -72 kJ 
C) -150 kJ 
D) -196 kJ 
E) -600 kJ

Question 18

What is the molecular shape for XeOF2?

Accepted Answer

A) trigonal planar 
B) tetrahedral 
C) trigonal bipyramid 
D) T-shape 
E) trigonal pyramidal 
A) trigonal planar 
B) tetrahedral 
C) trigonal bipyramid 
D) T-shape 
E) trigonal pyramidal

Question 19

Give the molecular shape of SO42-.

Accepted Answer

A) trigonal pyramidal 
B) trigonal planar 
C) tetrahedral 
D) linear 
E) octahedral 
A) trigonal pyramidal 
B) trigonal planar 
C) tetrahedral 
D) linear 
E) octahedral

Question 20

"Halogen" means "soluble salts."

Accepted Answer

A) True 
 B)False

Exam 22: Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

Write a balanced half equation for the following couple: O2(g)| OH-(aq) (basic)

Which name/formula combination is INCORRECT?

Choose the INCORRECT statement.

Choose the INCORRECT statement.

In the compound dinitrogen monoxide,sometimes used as a dental anesthetic,the oxidation state of nitrogen is ________.

What is the correct completion of the reaction: NaF + HC2H3O2 →

Which of the following has the lowest boiling point?

How much H2 (in liters)is produced at 65 °C and 670.torr by the reaction of 75.7 g of zinc? Zn(s)+ 2 H+(aq)→ Zn2+(aq)+ H2(g)

Ozone and "ordinary" oxygen are examples of:

The VSEPR theory predicts molecular shapes for the noble gas compounds.Which of these is correct? I.XeF2 is linear. II.XeOF2 is T-shaped. III.XeF4 is square planar.

Give the molecular shape of NO3-.

The compound of which P4O6 is the anhydride is ________.

The electron group geometry for XeF2 is ________.

Choose the INCORRECT name/formula combination.

Write a balanced half equation for the following couple: S(s)(acidic)

Pyrosulfuric is also called disulfuric H2S2O7.Pyrosulfuric acid may be synthesized by dissolving SO3 in ________.

What is the molecular shape for XeOF2?

Give the molecular shape of SO42-.

"Halogen" means "soluble salts."

Matter: Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Solubility and Complex-Ion Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

Write a balanced half equation for the following couple: O₂(g)| OH^-(aq)(basic)

What is the correct completion of the reaction: NaF + HC₂H₃O₂ →

How much H₂ (in liters)is produced at 65 °C and 670.torr by the reaction of 75.7 g of zinc? Zn(s)+ 2 H⁺(aq)→ Zn²⁺(aq)+ H₂(g)

The VSEPR theory predicts molecular shapes for the noble gas compounds.Which of these is correct? I.XeF₂ is linear. II.XeOF₂is T-shaped. III.XeF₄ is square planar.

Give the molecular shape of NO₃^-.

The compound of which P₄O₆ is the anhydride is ________.

The electron group geometry for XeF₂ is ________.

Pyrosulfuric is also called disulfuric H₂S₂O₇.Pyrosulfuric acid may be synthesized by dissolving SO₃ in ________.

What is the molecular shape for XeOF₂?

Give the molecular shape of SO₄^2-.