Question 1

Choose the INCORRECT statement.

Accepted Answer

A) The Frasch process is a method of mining sulfur. 
B) Photoconductivity is the production of photons by the use of electricity. 
C) Selenium displays the property of photoconductivity. 
D) Polonium is a rare radioactive metal. 
E) Sulfur is used in vulcanizing rubber,as a pesticide and to produce sulfuric acid. 
A) The Frasch process is a method of mining sulfur. 
B) Photoconductivity is the production of photons by the use of electricity. 
C) Selenium displays the property of photoconductivity. 
D) Polonium is a rare radioactive metal. 
E) Sulfur is used in vulcanizing rubber,as a pesticide and to produce sulfuric acid.

Question 2

"Red" phosphorus is insoluble in carbon disulfide,has a broad melting range and a very low vapor pressure,and does not conduct electricity.This evidence suggests that this substance is probably:

Accepted Answer

A) crystalline and metallic 
B) a crystal of P4 molecule units 
C) amorphous and polymeric 
D) P4+ ions in a "sea" of electrons 
E) cubic closest-packed unbonded P atoms 
A) crystalline and metallic 
B) a crystal of P4 molecule units 
C) amorphous and polymeric 
D) P4+ ions in a "sea" of electrons 
E) cubic closest-packed unbonded P atoms

Question 3

Which of the following oxides is neither acidic nor amphoteric?

Accepted Answer

A) As2O5  
B) Bi2O3  
C) N2O3  
D) P4O6  
E) Sb2O3  
A) As2O5  
B) Bi2O3  
C) N2O3  
D) P4O6  
E) Sb2O3

Question 4

Choose the INCORRECT statement.

Accepted Answer

A) Argon forms compounds readily. 
B) Argon,xenon,krypton,neon,helium,and radon are called noble gases. 
C) Liquid helium is used to maintain low temperatures. 
D) Metals that lose their electrical resistivity are called superconductors. 
E) Radon is a radioactive element. 
A) Argon forms compounds readily. 
B) Argon,xenon,krypton,neon,helium,and radon are called noble gases. 
C) Liquid helium is used to maintain low temperatures. 
D) Metals that lose their electrical resistivity are called superconductors. 
E) Radon is a radioactive element.

Question 5

Hydrogen compounds are called hybrids.

Accepted Answer

A) True 
 B)False

Question 6

What is the correct completion of the reaction: H2 + X2 → where X is a halogen

Accepted Answer

A) 2 H2 + X2 → 2 H2X 
B) H2 + 2 X2 → 2 HX2  
C) H2 + X2 → 2 HX 
D) H2 + X2 → H2X2  
E) H2 + X2 → no reaction 
A) 2 H2 + X2 → 2 H2X 
B) H2 + 2 X2 → 2 HX2  
C) H2 + X2 → 2 HX 
D) H2 + X2 → H2X2  
E) H2 + X2 → no reaction

Question 7

Choose the INCORRECT statement.

Accepted Answer

A) Fluorine adopts the -1 oxidation state when it forms compounds. 
B) In binary compounds with metals,the oxidation state of halogens is -1. 
C) Halogen ions commonly exhibit a charge of +1. 
D) Iodine can have oxidation states of +1,+3,+5 and +7 in compounds where iodine is bonded to oxygen and/or fluorine. 
E) HClO is hypochlorous acid. 
A) Fluorine adopts the -1 oxidation state when it forms compounds. 
B) In binary compounds with metals,the oxidation state of halogens is -1. 
C) Halogen ions commonly exhibit a charge of +1. 
D) Iodine can have oxidation states of +1,+3,+5 and +7 in compounds where iodine is bonded to oxygen and/or fluorine. 
E) HClO is hypochlorous acid.

Question 8

Nitrogen is obtained from air by fractional distillation.

Accepted Answer

A) True 
 B)False

Question 9

Both bismuth and arsenic are obtained from their sulfide ores.

Accepted Answer

A) True 
 B)False

Question 10

What is the formula for chloric acid?

Accepted Answer

A) HClO 
B) HCl 
C) HClO3  
D) HClO2  
E) HClO4  
A) HClO 
B) HCl 
C) HClO3  
D) HClO2  
E) HClO4

Question 11

What is the molecular shape for XeF2?

Accepted Answer

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

Question 12

Choose the INCORRECT name/symbol combination.

Accepted Answer

A) Xe xenon 
B) Ne neon 
C) Kr krypton 
D) Ar argon 
E) Ra radon 
A) Xe xenon 
B) Ne neon 
C) Kr krypton 
D) Ar argon 
E) Ra radon

Question 13

Selenium is obtained by the Frasch process.

Accepted Answer

A) True 
 B)False

Question 14

How much H2 (in liters)is produced at 45 °C and 770.torr by the reaction of 45.7 g of zinc?
Zn(s)+ 2 H+(aq)→ Zn2+(aq)+ H2(g)

Accepted Answer

A) 139 L 
B) 15.7 L 
C) 18.0 L 
D) 31.4 L 
E) 11.8 L 
A) 139 L 
B) 15.7 L 
C) 18.0 L 
D) 31.4 L 
E) 11.8 L

Question 15

Which element forms the largest variety of oxoanions?

Accepted Answer

A) S 
B) Cl 
C) P 
D) Br 
E) I 
A) S 
B) Cl 
C) P 
D) Br 
E) I

Question 16

If a certain natural gas supply contains 2.13% helium by mass,what amount of the natural gas must be processed,at 96.2% efficiency of helium recovery,to produce sufficient helium to inflate 24 party balloons to a volume of 5.3 L each at an internal gas pressure of 1.25 atm and a temperature of 23.7 °C?

Accepted Answer

A) 1.28 kg 
B) 1.18 kg 
C) 1.09 kg 
D) 0.82 kg 
E) 0.75 kg 
A) 1.28 kg 
B) 1.18 kg 
C) 1.09 kg 
D) 0.82 kg 
E) 0.75 kg

Question 17

The noble gas Xe is completely unreactive.

Accepted Answer

A) True 
 B)False

Question 18

Give the molecular shape of SO2.

Accepted Answer

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

Question 19

The Frasch process for the production of elemental sulfur has been largely supplanted by a gas-phase process using the reduction of sulfur dioxide by:

Accepted Answer

A) H2S(g) 
B) H2O(g) 
C) CS2(g) 
D) H2SO4(g) 
E) O3(g) 
A) H2S(g) 
B) H2O(g) 
C) CS2(g) 
D) H2SO4(g) 
E) O3(g)

Question 20

Which formula/name combination is INCORRECT?

Accepted Answer

A) NaN3/sodium nitride 
B) N2H4/hydrazine 
C) HONH2/hydroxylamine 
D) Mg(N3)2/magnesium azide 
E) PH3/phosphine 
A) NaN3/sodium nitride 
B) N2H4/hydrazine 
C) HONH2/hydroxylamine 
D) Mg(N3)2/magnesium azide 
E) PH3/phosphine

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

Choose the INCORRECT statement.

"Red" phosphorus is insoluble in carbon disulfide,has a broad melting range and a very low vapor pressure,and does not conduct electricity.This evidence suggests that this substance is probably:

Which of the following oxides is neither acidic nor amphoteric?

Choose the INCORRECT statement.

Hydrogen compounds are called hybrids.

What is the correct completion of the reaction: H2 + X2 → where X is a halogen

Choose the INCORRECT statement.

Nitrogen is obtained from air by fractional distillation.

Both bismuth and arsenic are obtained from their sulfide ores.

What is the formula for chloric acid?

What is the molecular shape for XeF2?

Choose the INCORRECT name/symbol combination.

Selenium is obtained by the Frasch process.

How much H2 (in liters)is produced at 45 °C and 770.torr by the reaction of 45.7 g of zinc? Zn(s)+ 2 H+(aq)→ Zn2+(aq)+ H2(g)

Which element forms the largest variety of oxoanions?

The noble gas Xe is completely unreactive.

Give the molecular shape of SO2.

The Frasch process for the production of elemental sulfur has been largely supplanted by a gas-phase process using the reduction of sulfur dioxide by:

Which formula/name combination is INCORRECT?

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

What is the correct completion of the reaction: H₂ + X₂ → where X is a halogen

What is the molecular shape for XeF₂?

How much H₂ (in liters)is produced at 45 °C and 770.torr by the reaction of 45.7 g of zinc? Zn(s)+ 2 H⁺(aq)→ Zn²⁺(aq)+ H₂(g)

Give the molecular shape of SO₂.