Question 1

Which of the following is INCORRECT?
A reaction typical for an alkali metal (M)is:

Accepted Answer

A) M2O + H2O → 2 MOH 
B) M + X2 → MX2 (X = halogen) 
C) 2 M + 2 NH3 → 2 MNH2 + H2  
D) 2 M + O2 → M2O2  
E) 2 M + H2 → 2 MH 
A) M2O + H2O → 2 MOH 
B) M + X2 → MX2 (X = halogen) 
C) 2 M + 2 NH3 → 2 MNH2 + H2  
D) 2 M + O2 → M2O2  
E) 2 M + H2 → 2 MH

Question 2

The Solvay process involves a reaction of sodium chloride,ammonia and carbon dioxide in aqueous solution.Of the various possible products,the one least soluble in water is:

Accepted Answer

A) ammonium bicarbonate 
B) "baking soda" (NaHCO3) 
C) "sal ammoniac" (NH4Cl) 
D) "table salt" (NaCl) 
E) "washing soda" (Na2CO3) 
A) ammonium bicarbonate 
B) "baking soda" (NaHCO3) 
C) "sal ammoniac" (NH4Cl) 
D) "table salt" (NaCl) 
E) "washing soda" (Na2CO3)

Question 3

In a nonmetal hydroxide the oxygen-hydrogen bond is generally less polar than the nonmetal-oxygen bond.

Accepted Answer

A) True 
 B)False

Question 4

The molecular geometry for HCN 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 5

Which of the following is uncharacteristic of the alkali metals?

Accepted Answer

A) large electronegativity 
B) soft 
C) produce visible color in flame test 
D) low melting points 
E) low ionization energies 
A) large electronegativity 
B) soft 
C) produce visible color in flame test 
D) low melting points 
E) low ionization energies

Question 6

Choose the INCORRECT statement.

Accepted Answer

A) A dimer is a molecule comprised of two like units. 
B) Adduct formation results in an ionic bond. 
C) Noncrystalline aluminum oxide is referred to as alumina. 
D) Crystalline aluminum oxide is called corundum. 
E) H- can be thought of as a pseudohalide. 
A) A dimer is a molecule comprised of two like units. 
B) Adduct formation results in an ionic bond. 
C) Noncrystalline aluminum oxide is referred to as alumina. 
D) Crystalline aluminum oxide is called corundum. 
E) H- can be thought of as a pseudohalide.

Question 7

In the stepwise preparation of pure calcium carbonate from limestone,the step referred to as calcination involves:

Accepted Answer

A) thermal decomposition of calcium carbonate to calcium oxide 
B) addition of water to calcium oxide to form calcium hydroxide 
C) bubbling carbon dioxide through aqueous calcium hydroxide 
D) heating calcium oxide with carbon to form calcium metal 
E) melting of calcium oxide 
A) thermal decomposition of calcium carbonate to calcium oxide 
B) addition of water to calcium oxide to form calcium hydroxide 
C) bubbling carbon dioxide through aqueous calcium hydroxide 
D) heating calcium oxide with carbon to form calcium metal 
E) melting of calcium oxide

Question 8

In seawater,Mg2+ is about 1350 mg Mg2+/L.How many grams of magnesium are in a pool that is 25 ft by 12 ft by 6 ft? (1 ft = 12 inches and 1 inch = 2.54 cm)

Accepted Answer

A) 4.78 × 102 g 
B) 74.1 g 
C) 6.88 × 104 g 
D) 6.88 × 107 g 
E) 1.64 × 103 g 
A) 4.78 × 102 g 
B) 74.1 g 
C) 6.88 × 104 g 
D) 6.88 × 107 g 
E) 1.64 × 103 g

Question 9

Choose the INCORRECT statement.

Accepted Answer

A) The thermite reaction is: Fe2O3(s)+ 2 Al(s)→ Al2O3(s)+ 2 Fe(l). 
B) Aluminum's chief ore is bauxite. 
C) Al2O3 is an amphoteric oxide. 
D) Cryolite is Na3AlF6. 
E) Alumina is Al(OH)3. 
A) The thermite reaction is: Fe2O3(s)+ 2 Al(s)→ Al2O3(s)+ 2 Fe(l). 
B) Aluminum's chief ore is bauxite. 
C) Al2O3 is an amphoteric oxide. 
D) Cryolite is Na3AlF6. 
E) Alumina is Al(OH)3.

Question 10

Hydrogen peroxide may act only as an oxidizing agent.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following has more than one allotrope?

Accepted Answer

A) Pb 
B) Cd 
C) Sn 
D) Mg 
E) Al 
A) Pb 
B) Cd 
C) Sn 
D) Mg 
E) Al

Question 12

Calculate the number of grams of aluminum produced in the electrolytic process when 2.5 × 105 coulombs are provided to the reaction.Assume 100% efficiency.

Accepted Answer

A) 23 g 
B) 7.7 g 
C) 70 g 
D) 3.5 g 
E) 11 g 
A) 23 g 
B) 7.7 g 
C) 70 g 
D) 3.5 g 
E) 11 g

Question 13

Choose the INCORRECT statement.

Accepted Answer

A) Diborane is B2H6. 
B) B(OH)3 boric acid is a monoprotic acid. 
C) Being electron deficient makes boron compounds strong Lewis acids. 
D) The B-H-B three-center bond has only two electrons. 
E) Boron is one of several nonmetals in group 13. 
A) Diborane is B2H6. 
B) B(OH)3 boric acid is a monoprotic acid. 
C) Being electron deficient makes boron compounds strong Lewis acids. 
D) The B-H-B three-center bond has only two electrons. 
E) Boron is one of several nonmetals in group 13.

Question 14

In the production of magnesium metal by the Dow process,the other immediate product of the electrolysis of the molten magnesium chloride is:

Accepted Answer

A) H2(g) 
B) HCl(g) 
C) Cl2(g) 
D) MgO(s) 
E) Mg(OH)2(s) 
A) H2(g) 
B) HCl(g) 
C) Cl2(g) 
D) MgO(s) 
E) Mg(OH)2(s)

Question 15

In the production of the metal by an electrolysis process,which of the following is the most costly in terms of amount of electricity required per ton of metal produced from its salt?

Accepted Answer

A) Na 
B) Mg 
C) Cu 
D) Ba 
E) Al 
A) Na 
B) Mg 
C) Cu 
D) Ba 
E) Al

Question 16

Complete and balance the following equation.
CaC2(s)+ H2O(l)→
Please include states.

Accepted Answer

CaC₂(s)+ 2

Question 17

The difference between temporary hard water and permanent hard water is that only the former contains a significant concentration of:

Accepted Answer

A) Ca2+  
B) CO32-  
C) HCO3-  
D) Mg2+  
E) OH-  
A) Ca2+  
B) CO32-  
C) HCO3-  
D) Mg2+  
E) OH-

Question 18

Choose the INCORRECT statement.

Accepted Answer

A) The production of limestone is called calcination. 
B) Limestone is mostly calcium carbonate. 
C) Stalactites are calcium carbonate formed as icicle-like deposits. 
D) Stalagmites form from the floor by deposition of calcium carbonate. 
E) Carbonic acid is a diprotic acid. 
A) The production of limestone is called calcination. 
B) Limestone is mostly calcium carbonate. 
C) Stalactites are calcium carbonate formed as icicle-like deposits. 
D) Stalagmites form from the floor by deposition of calcium carbonate. 
E) Carbonic acid is a diprotic acid.

Question 19

Write the general reaction for a group 1 (1A)metal with water.

Accepted Answer

A) 2 M(s)+ 2 H2O(l)→ H2O2(aq)+ 2 MH(s) 
B) 2 M(s)+ 2 H2O(l)→ 2 MOH(aq)+ H2(g) 
C) M(s)+ H2O(l)→ MO(s)+ H2(g) 
D) 2 M(s)+ H2O(l)→ M2O(s)+ H2(g) 
E) 2 M(s)+ 2H2O(l)→ M(OH)2(s)+ H2(g) 
A) 2 M(s)+ 2 H2O(l)→ H2O2(aq)+ 2 MH(s) 
B) 2 M(s)+ 2 H2O(l)→ 2 MOH(aq)+ H2(g) 
C) M(s)+ H2O(l)→ MO(s)+ H2(g) 
D) 2 M(s)+ H2O(l)→ M2O(s)+ H2(g) 
E) 2 M(s)+ 2H2O(l)→ M(OH)2(s)+ H2(g)

Question 20

Tl is different from Al,Ga,and In in that:

Accepted Answer

A) Tl has a much different electronegativity 
B) Tl has a much different first ionization energy 
C) Tl commonly forms compounds with +1 oxidation state 
D) Tl forms metal hydroxides that are amphoteric 
E) Tl commonly forms compounds with +3 oxidation state 
A) Tl has a much different electronegativity 
B) Tl has a much different first ionization energy 
C) Tl commonly forms compounds with +1 oxidation state 
D) Tl forms metal hydroxides that are amphoteric 
E) Tl commonly forms compounds with +3 oxidation state

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

Which of the following is INCORRECT? A reaction typical for an alkali metal (M)is:

The Solvay process involves a reaction of sodium chloride,ammonia and carbon dioxide in aqueous solution.Of the various possible products,the one least soluble in water is:

In a nonmetal hydroxide the oxygen-hydrogen bond is generally less polar than the nonmetal-oxygen bond.

The molecular geometry for HCN is ________.

Which of the following is uncharacteristic of the alkali metals?

Choose the INCORRECT statement.

In the stepwise preparation of pure calcium carbonate from limestone,the step referred to as calcination involves:

In seawater,Mg2+ is about 1350 mg Mg2+/L.How many grams of magnesium are in a pool that is 25 ft by 12 ft by 6 ft? (1 ft = 12 inches and 1 inch = 2.54 cm)

Choose the INCORRECT statement.

Hydrogen peroxide may act only as an oxidizing agent.

Which of the following has more than one allotrope?

Calculate the number of grams of aluminum produced in the electrolytic process when 2.5 × 105 coulombs are provided to the reaction.Assume 100% efficiency.

Choose the INCORRECT statement.

In the production of magnesium metal by the Dow process,the other immediate product of the electrolysis of the molten magnesium chloride is:

In the production of the metal by an electrolysis process,which of the following is the most costly in terms of amount of electricity required per ton of metal produced from its salt?

Complete and balance the following equation. CaC2(s)+ H2O(l)→ Please include states.

The difference between temporary hard water and permanent hard water is that only the former contains a significant concentration of:

Choose the INCORRECT statement.

Write the general reaction for a group 1 (1A)metal with water.

Tl is different from Al,Ga,and In in that:

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

In seawater,Mg²⁺ is about 1350 mg Mg²⁺/L.How many grams of magnesium are in a pool that is 25 ft by 12 ft by 6 ft? (1 ft = 12 inches and 1 inch = 2.54 cm)

Calculate the number of grams of aluminum produced in the electrolytic process when 2.5 × 10⁵ coulombs are provided to the reaction.Assume 100% efficiency.

Complete and balance the following equation. CaC₂(s)+ H₂O(l)→ Please include states.