Question 1

Choose the INCORRECT equation.

Accepted Answer

A) CaO + 3 C   CaC2 + CO 
B) CaC2 + 2 H2O → Ca(OH)2 + C2H2  
C) CH4 + 4 S → CS2 + 2 H2S 
D) (CN)2 + 2 OH- → 2 HOCN 
E) CH4 + 4 Cl2 → CCl4 + 4 HCl 
A) CaO + 3 C   CaC2 + CO 
B) CaC2 + 2 H2O → Ca(OH)2 + C2H2  
C) CH4 + 4 S → CS2 + 2 H2S 
D) (CN)2 + 2 OH- → 2 HOCN 
E) CH4 + 4 Cl2 → CCl4 + 4 HCl D

Question 2

Finish the following reaction:
Li(s)+ N2(g)→

Accepted Answer

A) 3 Li(s)+ N2(g)→ Li3N2(s) 
B) 4 Li(s)+ N2(g)→ 2 Li2N(s) 
C) 2 Li(s)+ N2(g)→ 2 LiN(s) 
D) 6 Li(s)+ N2(g)→ 2 Li3N(s) 
E) There is no reaction. 
A) 3 Li(s)+ N2(g)→ Li3N2(s) 
B) 4 Li(s)+ N2(g)→ 2 Li2N(s) 
C) 2 Li(s)+ N2(g)→ 2 LiN(s) 
D) 6 Li(s)+ N2(g)→ 2 Li3N(s) 
E) There is no reaction. D

Question 3

Choose the INCORRECT statement.

Accepted Answer

A) The diagonal relationship is the similarity of properties of the top element of one group to the second element of the next group. 
B) Li - Mg is a diagonal relationship. 
C) C - P is a diagonal relationship. 
D) Be - Al is a diagonal relationship. 
E) B - Si is a diagonal relationship. 
A) The diagonal relationship is the similarity of properties of the top element of one group to the second element of the next group. 
B) Li - Mg is a diagonal relationship. 
C) C - P is a diagonal relationship. 
D) Be - Al is a diagonal relationship. 
E) B - Si is a diagonal relationship. C

Question 4

Which of the following methods are unable to make water soft?

Accepted Answer

A) add CaO 
B) add Na2CO3  
C) boil 
D) pass through ion exchange 
E) pass through charcoal 
A) add CaO 
B) add Na2CO3  
C) boil 
D) pass through ion exchange 
E) pass through charcoal

Question 5

A sample of water has hardness expressed as 81 ppm Ca2+(aq).The sample is passed through an ion exchange column and the Ca2+(aq)ions are replaced by H+(aq)ions.What is the pH of the water after it has been treated? (1 ppm = 1 g solute/106 g solution)

Accepted Answer

A) 2.50 ppm 
B) 1.10 ppm 
C) 0.79 ppm 
D) 2.39 ppm 
E) 2.70 ppm 
A) 2.50 ppm 
B) 1.10 ppm 
C) 0.79 ppm 
D) 2.39 ppm 
E) 2.70 ppm

Question 6

Choose the INCORRECT statement about magnesium.

Accepted Answer

A) Magnesium is valued for its light weight. 
B) It has a lower density than any other structural metal. 
C) Aircraft parts are made from magnesium alloys. 
D) It is a good oxidizing agent. 
E) It is often used as a sacrificial anode. 
A) Magnesium is valued for its light weight. 
B) It has a lower density than any other structural metal. 
C) Aircraft parts are made from magnesium alloys. 
D) It is a good oxidizing agent. 
E) It is often used as a sacrificial anode.

Question 7

Which of the following metals is refined by some means other than electrolysis?

Accepted Answer

A) Na 
B) Mg 
C) Sn 
D) Al 
E) Zn 
A) Na 
B) Mg 
C) Sn 
D) Al 
E) Zn

Question 8

Which of the following statements describes an uncommon use of an element?

Accepted Answer

A) Aluminum is used in light-weight alloys. 
B) Gallium is used in the thermite reaction. 
C) Gallium is used in the electronics industry. 
D) Indium is used to make low-melting alloys. 
E) A possible use for thallium is in high-temperature superconductors. 
A) Aluminum is used in light-weight alloys. 
B) Gallium is used in the thermite reaction. 
C) Gallium is used in the electronics industry. 
D) Indium is used to make low-melting alloys. 
E) A possible use for thallium is in high-temperature superconductors.

Question 9

Choose the INCORRECT statement about Na2CO3.

Accepted Answer

A) A by-product from the production of Na2CO3 is CaCl2,which has a useful application in some localities. 
B) It is an important commercial compound used in the glass,soap and paper industries. 
C) It is produced by the Solvay process which utilizes NaCl and CaO as the primary raw materials in a multi-step synthesis. 
D) It is mined from large deposits in the western United States. 
E) Sodium carbonate can be formed by heating sodium bicarbonate. 
A) A by-product from the production of Na2CO3 is CaCl2,which has a useful application in some localities. 
B) It is an important commercial compound used in the glass,soap and paper industries. 
C) It is produced by the Solvay process which utilizes NaCl and CaO as the primary raw materials in a multi-step synthesis. 
D) It is mined from large deposits in the western United States. 
E) Sodium carbonate can be formed by heating sodium bicarbonate.

Question 10

What average current is required to form 5.7 grams of aluminum per hour by the electrolytic reaction?

Accepted Answer

A) 1.9 A 
B) 5.7 A 
C) 17 A 
D) 0.024 A 
E) 7.9 × 10-3 A 
A) 1.9 A 
B) 5.7 A 
C) 17 A 
D) 0.024 A 
E) 7.9 × 10-3 A

Question 11

Which of the following compounds is invoked to demonstrate the inert-pair effect?

Accepted Answer

A) Al(OH)3  
B) GaAs 
C) InAs 
D) Tl2O 
E) Al2O3  
A) Al(OH)3  
B) GaAs 
C) InAs 
D) Tl2O 
E) Al2O3

Question 12

Choose the INCORRECT statement.

Accepted Answer

A) The strong C-C and C-H bonds are very important in organic chemistry. 
B) At standard temperature and pressure graphite is more stable than diamond. 
C) Graphite changes spontaneously but very slowly to diamond. 
D) Pencil lead is a graphite and clay mixture. 
E) No harder substance than diamond is known. 
A) The strong C-C and C-H bonds are very important in organic chemistry. 
B) At standard temperature and pressure graphite is more stable than diamond. 
C) Graphite changes spontaneously but very slowly to diamond. 
D) Pencil lead is a graphite and clay mixture. 
E) No harder substance than diamond is known.

Question 13

Which of the following is used as a water softener?

Accepted Answer

A) lithium carbonate 
B) sodium nitrate 
C) sodium carbonate 
D) potassium chloride 
E) hydrochloric acid 
A) lithium carbonate 
B) sodium nitrate 
C) sodium carbonate 
D) potassium chloride 
E) hydrochloric acid

Question 14

What weight of lead sulfate is produced during discharge of a lead storage battery over a 3.0 hour period at an average current of 0.50 A? [Hint: Consider both electrode processes.]

Accepted Answer

A) 8.6 g 
B) 17 g 
C) 26 g 
D) 53 g 
E) 61 g 
A) 8.6 g 
B) 17 g 
C) 26 g 
D) 53 g 
E) 61 g

Question 15

An amphoteric substance acts as an acid in strongly basic solution and as a base in strongly acidic solution.

Accepted Answer

A) True 
 B)False

Question 16

One of the most important commercial processes for the semiconductor industry in recent years has been the gas phase reaction between arsine and trimethylgallium to form the solid product:

Accepted Answer

A) trimethylarsine 
B) methyl hydride 
C) gallium hydride 
D) gallium arsenide 
E) superconductine 
A) trimethylarsine 
B) methyl hydride 
C) gallium hydride 
D) gallium arsenide 
E) superconductine

Question 17

Choose the INCORRECT statement about carbon.

Accepted Answer

A) Carbon does not form multiple bonds. 
B) There are two very common allotropes: diamond and graphite. 
C) There is a strong tendency for catenation. 
D) Carbon can be hybridized into sp,sp2 and sp3 orbitals. 
E) Carbon primarily forms two gaseous oxides: CO and CO2. 
A) Carbon does not form multiple bonds. 
B) There are two very common allotropes: diamond and graphite. 
C) There is a strong tendency for catenation. 
D) Carbon can be hybridized into sp,sp2 and sp3 orbitals. 
E) Carbon primarily forms two gaseous oxides: CO and CO2.

Question 18

Complete the reaction:
SiO2 + 2 C

Accepted Answer

A) SiO + C2O 
B) SiC + CO2  
C) Si + 2 CO 
D) SiCO + CO 
E) SiC2O2  
A) SiO + C2O 
B) SiC + CO2  
C) Si + 2 CO 
D) SiCO + CO 
E) SiC2O2

Question 19

Choose the INCORRECT statement.

Accepted Answer

A) The class "detergents" does not include soaps. 
B) Detergents are cleansing agents. 
C) Detergents emulsify oils. 
D) Detergents usually mean synthetic products. 
E) A soap is a salt of a metal hydroxide and a fatty acid. 
A) The class "detergents" does not include soaps. 
B) Detergents are cleansing agents. 
C) Detergents emulsify oils. 
D) Detergents usually mean synthetic products. 
E) A soap is a salt of a metal hydroxide and a fatty acid.

Question 20

The formula for barium superoxide is BaO2.

Accepted Answer

A) True 
 B)False

Exam 21: Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

Choose the INCORRECT equation.

Finish the following reaction: Li(s)+ N2(g)→

Choose the INCORRECT statement.

Which of the following methods are unable to make water soft?

A sample of water has hardness expressed as 81 ppm Ca2+(aq).The sample is passed through an ion exchange column and the Ca2+(aq)ions are replaced by H+(aq)ions.What is the pH of the water after it has been treated? (1 ppm = 1 g solute/106 g solution)

Choose the INCORRECT statement about magnesium.

Which of the following metals is refined by some means other than electrolysis?

Which of the following statements describes an uncommon use of an element?

Choose the INCORRECT statement about Na2CO3.

What average current is required to form 5.7 grams of aluminum per hour by the electrolytic reaction?

Which of the following compounds is invoked to demonstrate the inert-pair effect?

Choose the INCORRECT statement.

Which of the following is used as a water softener?

What weight of lead sulfate is produced during discharge of a lead storage battery over a 3.0 hour period at an average current of 0.50 A? [Hint: Consider both electrode processes.]

An amphoteric substance acts as an acid in strongly basic solution and as a base in strongly acidic solution.

One of the most important commercial processes for the semiconductor industry in recent years has been the gas phase reaction between arsine and trimethylgallium to form the solid product:

Choose the INCORRECT statement about carbon.

Complete the reaction: SiO2 + 2 C

Choose the INCORRECT statement.

The formula for barium superoxide is BaO2.

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 Ii: Groups 18,17,16,15,and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

Finish the following reaction: Li(s)+ N₂(g)→

A sample of water has hardness expressed as 81 ppm Ca²⁺(aq).The sample is passed through an ion exchange column and the Ca²⁺(aq)ions are replaced by H⁺(aq)ions.What is the pH of the water after it has been treated? (1 ppm = 1 g solute/10⁶ g solution)

Choose the INCORRECT statement about Na₂CO₃.

Complete the reaction: SiO₂ + 2 C

The formula for barium superoxide is BaO₂.