Question 1

The electronic transitions that take place within d or f subshells of transition metals:

Accepted Answer

A) are responsible for their metallic character 
B) cause transition metals to be much better conductors than the very active metals 
C) occur only in ferromagnetic elements 
D) are responsible for their high density 
E) are responsible for their having highly colored compounds 
A) are responsible for their metallic character 
B) cause transition metals to be much better conductors than the very active metals 
C) occur only in ferromagnetic elements 
D) are responsible for their high density 
E) are responsible for their having highly colored compounds

Question 2

A 25.0 mL aliquot of a solution containing Fe2+(aq),prepared during an assay of a pyrite ore,was titrated to a faint purple endpoint by 32.2 mL of 0.020 M KMnO4(aq).What was the molarity of the Fe2+ solution? [The permanganate was reduced to Mn2+(aq).]

Accepted Answer

A) 0.13 M 
B) 0.19 M 
C) 0.26 M 
D) 0.31 M 
E) 0.47 M 
A) 0.13 M 
B) 0.19 M 
C) 0.26 M 
D) 0.31 M 
E) 0.47 M

Question 3

What is the ground-state electron configuration for Cr3+ (Z = 24)?

Accepted Answer

A) [Ar] 4s23d7 
B) [Ar] 4s23d1 
C) [Ar] 3d3 
D) [Ar] 4s13d2 
A) [Ar] 4s23d7 
B) [Ar] 4s23d1 
C) [Ar] 3d3 
D) [Ar] 4s13d2

Question 4

Choose the INCORRECT statement.

Accepted Answer

A) The extraction of copper is complicated by iron. 
B) Blister copper has bubbles of air on the surface of the copper. 
C) Refining to high purity copper is done electrolytically. 
D) Pyrometallurgy is the roasting of an ore followed by reduction of the ore to metal. 
E) "Pyro" as a prefix indicates high temperatures. 
A) The extraction of copper is complicated by iron. 
B) Blister copper has bubbles of air on the surface of the copper. 
C) Refining to high purity copper is done electrolytically. 
D) Pyrometallurgy is the roasting of an ore followed by reduction of the ore to metal. 
E) "Pyro" as a prefix indicates high temperatures.

Question 5

Choose the INCORRECT statement.

Accepted Answer

A) Aqua regia is a combination of HCl and HNO3. 
B) Malleable means that a metal can be beaten into a thin sheet. 
C) One of the most important property of Cu,Ag,and Au is resistance to corrosion. 
D) Because the ions of Cu,Ag,and Au are easy to reduce means that the metals are easy to oxidize. 
E) The coinage metals are Cu,Ag,and Au. 
A) Aqua regia is a combination of HCl and HNO3. 
B) Malleable means that a metal can be beaten into a thin sheet. 
C) One of the most important property of Cu,Ag,and Au is resistance to corrosion. 
D) Because the ions of Cu,Ag,and Au are easy to reduce means that the metals are easy to oxidize. 
E) The coinage metals are Cu,Ag,and Au.

Question 6

Choose the INCORRECT statement.

Accepted Answer

A) The product of a blast furnace is pig iron. 
B) Cast iron is pig iron poured directly into molds. 
C) Pig iron is converted to steel by reducing the carbon content,removing Si,Mn,P,and other impurities,and adding alloying elements. 
D) The most important method of steel-making today is the basic oxygen process. 
E) In the basic oxygen process,oxygen is bubbled into the blast furnace. 
A) The product of a blast furnace is pig iron. 
B) Cast iron is pig iron poured directly into molds. 
C) Pig iron is converted to steel by reducing the carbon content,removing Si,Mn,P,and other impurities,and adding alloying elements. 
D) The most important method of steel-making today is the basic oxygen process. 
E) In the basic oxygen process,oxygen is bubbled into the blast furnace.

Question 7

The lanthanide contraction is due to the poor shielding effect of the f-electrons and the higher nuclear charge.

Accepted Answer

A) True 
 B)False

Question 8

Choose the INCORRECT statement.

Accepted Answer

A) In steel making,DRI stands for Detection and Recovery of Iron. 
B) In the basic oxygen process,a lance is a water cooled tube to deliver limestone and oxygen. 
C) Alloying elements with steel include Cr,Ni,Mn,V,Mo and W. 
D) The direct reduction of iron depends on the availability of natural gas. 
E) Steel is an alloy of iron. 
A) In steel making,DRI stands for Detection and Recovery of Iron. 
B) In the basic oxygen process,a lance is a water cooled tube to deliver limestone and oxygen. 
C) Alloying elements with steel include Cr,Ni,Mn,V,Mo and W. 
D) The direct reduction of iron depends on the availability of natural gas. 
E) Steel is an alloy of iron.

Question 9

The coinage metals are copper,silver,and zinc.

Accepted Answer

A) True 
 B)False

Question 10

How much carbon monoxide is required to reduce 2.00 metric tons (2000 kg)of iron ore if the ore is 5.03% iron?
Fe2O3(s)+ 3 CO(g)→ 2 Fe(l)+ 3 CO2(g)

Accepted Answer

A) 151 kg 
B) 75.7 kg 
C) 25.2 kg 
D) 40.7 kg 
E) 50.5 kg 
A) 151 kg 
B) 75.7 kg 
C) 25.2 kg 
D) 40.7 kg 
E) 50.5 kg

Question 11

What mass of manganese dioxide,from pyrolusite ore,is required for production of 25 kg of potassium permanganate by a process which is 78% efficient?

Accepted Answer

A) 18 kg 
B) 14 kg 
C) 25 kg 
D) 29 kg 
E) 32 kg 
A) 18 kg 
B) 14 kg 
C) 25 kg 
D) 29 kg 
E) 32 kg

Question 12

Which of the following definitions is INCORRECT?

Accepted Answer

A) amalgam: a solid solution or alloy containing mercury 
B) coinage metals: the transition elements of Group 11 (1
B)  
C) galvanized iron: iron which has been electroplated with tin 
D) lanthanides: elements of atomic number 58 through 71 
E) pig iron: slightly impure iron as obtained directly from the blast furnace 
A) amalgam: a solid solution or alloy containing mercury 
B) coinage metals: the transition elements of Group 11 (1
B)  
C) galvanized iron: iron which has been electroplated with tin 
D) lanthanides: elements of atomic number 58 through 71 
E) pig iron: slightly impure iron as obtained directly from the blast furnace

Question 13

Choose the INCORRECT statement.

Accepted Answer

A) Iron is the most widely used metal from the earth's crust. 
B) The simplified equation for the reduction of iron is Fe2O3(s)+ 3 CO(g)→ 2 Fe(l)+ 3 CO2(g). 
C) One process in the making of steel from pig iron is to reduce the carbon content. 
D) The product of a blast furnace is steel. 
E) The solid reactants in a blast furnace are iron ore,coke,and a slag-forming flux. 
A) Iron is the most widely used metal from the earth's crust. 
B) The simplified equation for the reduction of iron is Fe2O3(s)+ 3 CO(g)→ 2 Fe(l)+ 3 CO2(g). 
C) One process in the making of steel from pig iron is to reduce the carbon content. 
D) The product of a blast furnace is steel. 
E) The solid reactants in a blast furnace are iron ore,coke,and a slag-forming flux.

Question 14

Which of the following exhibits ferromagnetism?

Accepted Answer

A) Ni 
B) Ru 
C) Rh 
D) Mn 
A) Ni 
B) Ru 
C) Rh 
D) Mn

Question 15

Which element has the lowest first ionization potential?

Accepted Answer

A) Fe 
B) Ni 
C) Co 
D) Mn 
E) Ti 
A) Fe 
B) Ni 
C) Co 
D) Mn 
E) Ti

Question 16

What volume of 18 M sulfuric acid could be prepared from the sulfur dioxide formed by the smelting of 5.00 metric tons of copper(I)sulfide,assuming that only 50% of the sulfur dioxide can actually be converted to the acid?

Accepted Answer

A) 790 L 
B) 870 L 
C) 940 L 
D) 1,200 L 
E) 1,600 L 
A) 790 L 
B) 870 L 
C) 940 L 
D) 1,200 L 
E) 1,600 L

Question 17

Choose the INCORRECT statement.

Accepted Answer

A) The lanthanides often occur naturally as oxides. 
B) The most common oxidation state of lanthanides is +4. 
C) Most of the lanthanides are paramagnetic. 
D) Like the transition elements,aqueous solutions of the lanthanides are colored. 
E) Fractionated means to alter slightly the ratio of the concentration of one element to another. 
A) The lanthanides often occur naturally as oxides. 
B) The most common oxidation state of lanthanides is +4. 
C) Most of the lanthanides are paramagnetic. 
D) Like the transition elements,aqueous solutions of the lanthanides are colored. 
E) Fractionated means to alter slightly the ratio of the concentration of one element to another.

Question 18

The atomic radius of Ru is approximately the same as that of Os.

Accepted Answer

A) True 
 B)False

Question 19

Write the electron configuration for Fe2+.

Accepted Answer

A) [Ar]3d6  
B) [Ar]4s23d4  
C) [Ar]4s24p4  
D) [Ar]4s14p1  
E) [Ar]5s2  
A) [Ar]3d6  
B) [Ar]4s23d4  
C) [Ar]4s24p4  
D) [Ar]4s14p1  
E) [Ar]5s2

Question 20

List the following in order of increasing atomic radius: V,Sc,Fe,Ti.

Accepted Answer

A) Fe < V < Ti < Sc 
B) Sc < Ti < V < Fe 
C) Ti < V < Fe < Sc 
D) V < Fe < Sc < Ti 
E) Fe < Sc < Ti < V 
A) Fe < V < Ti < Sc 
B) Sc < Ti < V < Fe 
C) Ti < V < Fe < Sc 
D) V < Fe < Sc < Ti 
E) Fe < Sc < Ti < V

Exam 23: The Transition Elements

The electronic transitions that take place within d or f subshells of transition metals:

A 25.0 mL aliquot of a solution containing Fe2+(aq),prepared during an assay of a pyrite ore,was titrated to a faint purple endpoint by 32.2 mL of 0.020 M KMnO4(aq).What was the molarity of the Fe2+ solution? [The permanganate was reduced to Mn2+(aq).]

What is the ground-state electron configuration for Cr3+ (Z = 24)?

Choose the INCORRECT statement.

Choose the INCORRECT statement.

Choose the INCORRECT statement.

The lanthanide contraction is due to the poor shielding effect of the f-electrons and the higher nuclear charge.

Choose the INCORRECT statement.

The coinage metals are copper,silver,and zinc.

How much carbon monoxide is required to reduce 2.00 metric tons (2000 kg)of iron ore if the ore is 5.03% iron? Fe2O3(s)+ 3 CO(g)→ 2 Fe(l)+ 3 CO2(g)

What mass of manganese dioxide,from pyrolusite ore,is required for production of 25 kg of potassium permanganate by a process which is 78% efficient?

Which of the following definitions is INCORRECT?

Choose the INCORRECT statement.

Which of the following exhibits ferromagnetism?

Which element has the lowest first ionization potential?

What volume of 18 M sulfuric acid could be prepared from the sulfur dioxide formed by the smelting of 5.00 metric tons of copper(I)sulfide,assuming that only 50% of the sulfur dioxide can actually be converted to the acid?

Choose the INCORRECT statement.

The atomic radius of Ru is approximately the same as that of Os.

Write the electron configuration for Fe2+.

List the following in order of increasing atomic radius: V,Sc,Fe,Ti.

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

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

Complex Ions and Coordination Compounds

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

A 25.0 mL aliquot of a solution containing Fe²⁺(aq),prepared during an assay of a pyrite ore,was titrated to a faint purple endpoint by 32.2 mL of 0.020 M KMnO₄(aq).What was the molarity of the Fe²⁺ solution? [The permanganate was reduced to Mn²⁺(aq).]

What is the ground-state electron configuration for Cr³⁺ (Z = 24)?

How much carbon monoxide is required to reduce 2.00 metric tons (2000 kg)of iron ore if the ore is 5.03% iron? Fe₂O₃(s)+ 3 CO(g)→ 2 Fe(l)+ 3 CO₂(g)

Write the electron configuration for Fe²⁺.