Question 1

Which of the following will be a good oxidizing agent?

Accepted Answer

A) V2O5 
B) Fe(OH2)62+ 
C) Zn 
D) CoCl2 
A) V2O5 
B) Fe(OH2)62+ 
C) Zn 
D) CoCl2

Question 2

Which of the following transition elements is unreactive towards aqueous hydrochloric acid?

Accepted Answer

A) zinc 
B) titanium 
C) scandium 
D) iron 
E) copper 
A) zinc 
B) titanium 
C) scandium 
D) iron 
E) copper

Question 3

Choose the INCORRECT statement about the first row transition elements.

Accepted Answer

A) Elements on the right side of the transition series usually do not exhibit the wide range of oxidation states. 
B) Stability of higher oxidation states increases down a group. 
C) Electrode potentials decrease across to the right. 
D) All but Cu have negative reduction potentials. 
E) All but Cu(s)displace H+(aq)as H2(g). 
A) Elements on the right side of the transition series usually do not exhibit the wide range of oxidation states. 
B) Stability of higher oxidation states increases down a group. 
C) Electrode potentials decrease across to the right. 
D) All but Cu have negative reduction potentials. 
E) All but Cu(s)displace H+(aq)as H2(g).

Question 4

Which of the following species has the electron configuration [Ar]3d6?

Accepted Answer

A) Cr 
B) Fe3+ 
C) Co3+ 
D) Ni3+ 
A) Cr 
B) Fe3+ 
C) Co3+ 
D) Ni3+

Question 5

Order the following compounds from acidic to basic,with the most acidic on the left.
CrO,Cr2O3,CrO3

Accepted Answer

A) CrO3 > Cr2O3 > CrO 
B) CrO3 > CrO > Cr2O3 
C) Cr2O3 > CrO3 > CrO 
D) CrO > Cr2O3 > CrO3 
A) CrO3 > Cr2O3 > CrO 
B) CrO3 > CrO > Cr2O3 
C) Cr2O3 > CrO3 > CrO 
D) CrO > Cr2O3 > CrO3

Question 6

Lanthanides are also called rare earth elements.

Accepted Answer

A) True 
 B)False

Question 7

A property that is common to both main group and transition metals is that both types:

Accepted Answer

A) have high electronegativities 
B) include a very active metal 
C) are found in many oxidation states 
D) exhibit color in compounds 
E) exhibit at least one oxidation state equal to their periodic group number 
A) have high electronegativities 
B) include a very active metal 
C) are found in many oxidation states 
D) exhibit color in compounds 
E) exhibit at least one oxidation state equal to their periodic group number

Question 8

What is the highest possible oxidation state for manganese?

Accepted Answer

A) +2 
B) +5 
C) +6 
D) +7 
A) +2 
B) +5 
C) +6 
D) +7

Question 9

Find the FALSE combination of a metallurgical process and its example:

Accepted Answer

A) leaching: 4 Au(s)+ 8 CN-(aq)+ O2(g)+ 2 H2O(l)→ 4 [Au(CN)2]-(aq)+ 4 OH-(aq) 
B) reduction: ZnCO3(s)→ ZnO(s)+ CO2(g) 
C) roasting: 2 Cu2S(s)+ 3 O2(g)→ 2 Cu2O(s)+ 2 SO2(g) 
D) precipitation: Zn2+(aq)+ S2-(aq)→ ZnS(s) 
E) conversion: 2 Co(OH)3(s)   Co2O3(s)+ 3 H2O(g) 
A) leaching: 4 Au(s)+ 8 CN-(aq)+ O2(g)+ 2 H2O(l)→ 4 [Au(CN)2]-(aq)+ 4 OH-(aq) 
B) reduction: ZnCO3(s)→ ZnO(s)+ CO2(g) 
C) roasting: 2 Cu2S(s)+ 3 O2(g)→ 2 Cu2O(s)+ 2 SO2(g) 
D) precipitation: Zn2+(aq)+ S2-(aq)→ ZnS(s) 
E) conversion: 2 Co(OH)3(s)   Co2O3(s)+ 3 H2O(g)

Question 10

Consider two metals,metal M and metal N.The reaction M + N2+ → M2+ + N will proceed if:

Accepted Answer

A) M is Zn and N2+ is Pb2+  
B) M is Cu and N2+ is Fe2+  
C) M is Sn and N2+ is Ca2+  
D) M is Ni and N2+ is Mg2+  
E) M is Fe and N2+ is Ca2+  
A) M is Zn and N2+ is Pb2+  
B) M is Cu and N2+ is Fe2+  
C) M is Sn and N2+ is Ca2+  
D) M is Ni and N2+ is Mg2+  
E) M is Fe and N2+ is Ca2+

Question 11

Choose the INCORRECT statement.

Accepted Answer

A) Cu,Ag,and Au do not react with oxygen in the air. 
B) Cu will corrode in moist air. 
C) Ag will react with sulfur in the air to form tarnish. 
D) Copper is used as copper halide in photography. 
E) Copper is essential to life in trace amounts. 
A) Cu,Ag,and Au do not react with oxygen in the air. 
B) Cu will corrode in moist air. 
C) Ag will react with sulfur in the air to form tarnish. 
D) Copper is used as copper halide in photography. 
E) Copper is essential to life in trace amounts.

Question 12

What are the formulas of the missing compounds,1 and 2,respectively,in the reaction below? This reaction is used in the production of metallic zinc.
ZnO(s)+ 1 → Zn(g)+ 2

Accepted Answer

A) C(s)and CO(g) 
B) CO(g)and ZnCO3(s) 
C) CO(g)and C(s) 
D) C(s)and CO2(g) 
A) C(s)and CO(g) 
B) CO(g)and ZnCO3(s) 
C) CO(g)and C(s) 
D) C(s)and CO2(g)

Question 13

An iron plate of 0.559 m2 surface area is to be chrome plated using a chromic acid-sulfuric acid plating bath.The anode and cathode half-equations are:
Cathode: Cr2O72-(aq)+ 14 H+(aq)+ 12 e- → 2 Cr(s)+ 7 H2O(l)E° = 0.320 V
Anode: 2 H2O(l)→ O2(g)+ 4 H+(aq)+ 4 e- E° = 1.229 V
Determine the minimum energy needed to produce a plating 0.115 mm thick on the iron plate.The density of chromium is 7.19 g/cm3.

Accepted Answer

A) 526 kJ 
B) 780 kJ 
C) 1.05 × 103 kJ 
D) 4.68 × 103 kJ 
E) 9.36 × 103 kJ 
A) 526 kJ 
B) 780 kJ 
C) 1.05 × 103 kJ 
D) 4.68 × 103 kJ 
E) 9.36 × 103 kJ

Question 14

At 273 K,ΔG° for the reaction
2 C(s)+ O2(g)→ 2 CO(g)
Is about -280 kJ,and at 1480 K is about -580 kJ.
For the reaction
2 Zn(s)+ O2(g)→ 2 ZnO(s)
ΔG° at 273 K and 1480 K,respectively,is -640 and -280 kJ.Calculate ΔG° at 273 K and 1480 K,respectively,for the reduction of zinc oxide by carbon.

Accepted Answer

A) +180 and -150 kJ 
B) +360 and -300 kJ 
C) -360 and +300 kJ 
D) -180 and +150 kJ 
A) +180 and -150 kJ 
B) +360 and -300 kJ 
C) -360 and +300 kJ 
D) -180 and +150 kJ

Question 15

The net formation constant for tetraamminezinc(II)is 4.1 × 108.What would be the approximate potential of the galvanic cell symbolized below?
Zn(s)/Zn(NH3)42+ (aq,1.0 M),NH3(aq,1.0 M)//Zn2+(aq,1.0 M)/Zn(s)

Accepted Answer

A) 0.76 V 
B) 0.00 V 
C) 0.51 V 
D) 0.25 V 
E) 1.02 V 
A) 0.76 V 
B) 0.00 V 
C) 0.51 V 
D) 0.25 V 
E) 1.02 V

Question 16

Metallurgy is the general study of metals.

Accepted Answer

A) True 
 B)False

Question 17

Write the overall equation for reducing Cu2S to metallic copper.

Accepted Answer

A) Cu2S(l)+ C(s)→ 2 Cu(l)+ CS(g) 
B) Cu2S(l)+ CO(g)→ 2 Cu(l)+ CO(g)+ S(s) 
C) Cu2S(l)+ 2 CO(g)+ O2(g)→ 2 Cu(l)+ 2 CO2(g)+ S(s) 
D) Cu2S(l)+ 3 O2(g)→ 2 Cu(l)+ S(s)+ 2 O3(g) 
E) Cu2S(l)+ O2(g)→ 2 Cu(l)+ SO2(g) 
A) Cu2S(l)+ C(s)→ 2 Cu(l)+ CS(g) 
B) Cu2S(l)+ CO(g)→ 2 Cu(l)+ CO(g)+ S(s) 
C) Cu2S(l)+ 2 CO(g)+ O2(g)→ 2 Cu(l)+ 2 CO2(g)+ S(s) 
D) Cu2S(l)+ 3 O2(g)→ 2 Cu(l)+ S(s)+ 2 O3(g) 
E) Cu2S(l)+ O2(g)→ 2 Cu(l)+ SO2(g)

Question 18

Choose the INCORRECT statement about the transition elements.

Accepted Answer

A) They have high melting points. 
B) They are good electrical conductors. 
C) They have moderate to extreme hardness. 
D) They are d-block and f-block elements. 
E) They generally have positive reduction potentials. 
A) They have high melting points. 
B) They are good electrical conductors. 
C) They have moderate to extreme hardness. 
D) They are d-block and f-block elements. 
E) They generally have positive reduction potentials.

Question 19

List the following in order of increasing density: Ti,Pd,Nb,Pt.

Accepted Answer

A) Ti < Pt < Pd < Nb 
B) Nb < Ti < Pt < Pd 
C) Pd < Nb < Ti < Pt 
D) Pt < Pd < Nb < Ti 
E) Ti < Nb < Pd < Pt 
A) Ti < Pt < Pd < Nb 
B) Nb < Ti < Pt < Pd 
C) Pd < Nb < Ti < Pt 
D) Pt < Pd < Nb < Ti 
E) Ti < Nb < Pd < Pt

Question 20

Write the equation for treatment of Ag(s)with CN-(aq).

Accepted Answer

A) 4 Ag(s)+ 2 CN-(aq)+ O2(g)+ 2 H2O(l)→ 4 AgO(s)+ 4 CO(g)+ 4 NH-(aq)  
B) 4 Ag(s)+ 8 CN-(aq)+ O2(g)+ 2 H2O(l)→ 4 [AgCN]- + 4 CO(g)+ 4 NH+(aq)  
C) 4 Ag(s)+ 8 CN-(aq)+ O2(g)+ 2 H2O(l)→ Ag3N(s)+ 4 OH-(aq)+ AgC8(s) 
D) 4 Ag(s)+ 8 CN-(aq)+ O2(g)+ 2 H2O(l)→ 4 [Ag(CN)2]-(aq)+ 4 OH-(aq)  
E) 4 Ag(s)+ 8 CN-(aq)+ O2(g)+ 2 H2O(l)→ 4 AgO(s)+ 2 H2(g)+ 2 CO(g)+ 6 CN-(aq)  
A) 4 Ag(s)+ 2 CN-(aq)+ O2(g)+ 2 H2O(l)→ 4 AgO(s)+ 4 CO(g)+ 4 NH-(aq)  
B) 4 Ag(s)+ 8 CN-(aq)+ O2(g)+ 2 H2O(l)→ 4 [AgCN]- + 4 CO(g)+ 4 NH+(aq)  
C) 4 Ag(s)+ 8 CN-(aq)+ O2(g)+ 2 H2O(l)→ Ag3N(s)+ 4 OH-(aq)+ AgC8(s) 
D) 4 Ag(s)+ 8 CN-(aq)+ O2(g)+ 2 H2O(l)→ 4 [Ag(CN)2]-(aq)+ 4 OH-(aq)  
E) 4 Ag(s)+ 8 CN-(aq)+ O2(g)+ 2 H2O(l)→ 4 AgO(s)+ 2 H2(g)+ 2 CO(g)+ 6 CN-(aq)

Exam 23: The Transition Elements

Which of the following will be a good oxidizing agent?

Which of the following transition elements is unreactive towards aqueous hydrochloric acid?

Choose the INCORRECT statement about the first row transition elements.

Which of the following species has the electron configuration [Ar]3d6?

Order the following compounds from acidic to basic,with the most acidic on the left. CrO,Cr2O3,CrO3

Lanthanides are also called rare earth elements.

A property that is common to both main group and transition metals is that both types:

What is the highest possible oxidation state for manganese?

Find the FALSE combination of a metallurgical process and its example:

Consider two metals,metal M and metal N.The reaction M + N2+ → M2+ + N will proceed if:

Choose the INCORRECT statement.

What are the formulas of the missing compounds,1 and 2,respectively,in the reaction below? This reaction is used in the production of metallic zinc. ZnO(s)+ 1 → Zn(g)+ 2

The net formation constant for tetraamminezinc(II)is 4.1 × 108.What would be the approximate potential of the galvanic cell symbolized below? Zn(s)/Zn(NH3)42+ (aq,1.0 M),NH3(aq,1.0 M)//Zn2+(aq,1.0 M)/Zn(s)

Metallurgy is the general study of metals.

Write the overall equation for reducing Cu2S to metallic copper.

Choose the INCORRECT statement about the transition elements.

List the following in order of increasing density: Ti,Pd,Nb,Pt.

Write the equation for treatment of Ag(s)with CN-(aq).

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

Which of the following species has the electron configuration [Ar]3d⁶?

Order the following compounds from acidic to basic,with the most acidic on the left. CrO,Cr₂O₃,CrO₃

Consider two metals,metal M and metal N.The reaction M + N²⁺ → M²⁺ + N will proceed if:

The net formation constant for tetraamminezinc(II)is 4.1 × 10⁸.What would be the approximate potential of the galvanic cell symbolized below? Zn(s)/Zn(NH₃)₄²⁺ (aq,1.0 M),NH₃(aq,1.0 M)//Zn²⁺(aq,1.0 M)/Zn(s)

Write the overall equation for reducing Cu₂S to metallic copper.

Write the equation for treatment of Ag(s)with CN^-(aq).