Question 1

A monodentate ligand can have only one lone pair of electrons.

Accepted Answer

A) True 
 B)False

Question 2

Choose the INCORRECT formula/name combination for ligands.

Accepted Answer

A) -O2C-CO2- / oxalato (ox) 
B) S2O32- / thiosulfato 
C) CH3NH2 / ammino 
D) SCN- bonded to S / thiocyanato-S- 
E) NCS- bonded to N / thiocyanato-N- 
A) -O2C-CO2- / oxalato (ox) 
B) S2O32- / thiosulfato 
C) CH3NH2 / ammino 
D) SCN- bonded to S / thiocyanato-S- 
E) NCS- bonded to N / thiocyanato-N-

Question 3

The net formation constant for tetrachloromercurate(II)ion is 1.2 × 1015.Calculate the approximate standard electrode potential for:
[HgCl4]2-(aq)+ 2 e- → Hg(l)+ 4 Cl-(aq)
Given: Hg2+(aq)+ 2 e- → Hg(l)E° + 0.85 V

Accepted Answer

A) -0.39 V 
B) -0.63 V 
C) +0.70 V 
D) +0.41 V 
E) zero 
A) -0.39 V 
B) -0.63 V 
C) +0.70 V 
D) +0.41 V 
E) zero

Question 4

Of the following complex ions,two appear violet in aqueous solution,one appears purple,one appears blue-green,and one appears yellow.Which is yellow?

Accepted Answer

A) [Cr(H2O)6]3+  
B) [CrCl(H2O)5]2+  
C) [CrCl(NH3)5]2+  
D) [CrCl2(NH3)4]+  
E) [Cr(NH3)6]3+  
A) [Cr(H2O)6]3+  
B) [CrCl(H2O)5]2+  
C) [CrCl(NH3)5]2+  
D) [CrCl2(NH3)4]+  
E) [Cr(NH3)6]3+

Question 5

[Cu(H2O)4]2+ absorbs light in the yellow part of the visible spectrum,thereby appearing to have the color ________.

Accepted Answer

A) blue 
B) cyan 
C) green 
D) purple 
E) yellow 
A) blue 
B) cyan 
C) green 
D) purple 
E) yellow

Question 6

Choose the INCORRECT statement.

Accepted Answer

A) The coordination number is the number of ligands which can attach to a metal center. 
B) A ligand supplies one or more electron pairs to bond to the metal ion. 
C) The ligand-metal ion bond is a coordinate covalent bond. 
D) A ligand is a Lewis base. 
E) A ligand that donates a pair of electrons is multidentate. 
A) The coordination number is the number of ligands which can attach to a metal center. 
B) A ligand supplies one or more electron pairs to bond to the metal ion. 
C) The ligand-metal ion bond is a coordinate covalent bond. 
D) A ligand is a Lewis base. 
E) A ligand that donates a pair of electrons is multidentate.

Question 7

[Fe(CN)6]4- has how many unpaired electrons?

Accepted Answer

A) 2 
B) 0 
C) 4 
D) 3 
E) 1 
A) 2 
B) 0 
C) 4 
D) 3 
E) 1

Question 8

If it is assumed that [Fe(H2O)6]3+ can lose two hydrogens,what is the formula of the resulting ion when Fe3+ is placed in water?

Accepted Answer

A) [Fe(H2O)2](OH)2]2- 
B) [Fe(OH)(H2O)5]2+ 
C) [Fe(OH)2(H2O)4]2+ 
D) [Fe(OH)2(H2O)4]+ 
E) [Fe(OH)2(H2O)4]2-  
A) [Fe(H2O)2](OH)2]2- 
B) [Fe(OH)(H2O)5]2+ 
C) [Fe(OH)2(H2O)4]2+ 
D) [Fe(OH)2(H2O)4]+ 
E) [Fe(OH)2(H2O)4]2-

Question 9

Which element possesses the smallest number of unpaired electrons?

Accepted Answer

A) Co 
B) Cr 
C) Cu 
D) Mn  
E) Fe 
A) Co 
B) Cr 
C) Cu 
D) Mn  
E) Fe

Question 10

Which of the following metal ions has coordination numbers of 2 or 4?

Accepted Answer

A) Fe3+  
B) Co3+  
C) Cu+  
D) Pt2+  
E) Cr3+  
A) Fe3+  
B) Co3+  
C) Cu+  
D) Pt2+  
E) Cr3+

Question 11

Chlorophyll is a green pigment involved in the growth of plants.One type of chlorophyll is a complex.What color of light should plants grow best in?

Accepted Answer

A) blue 
B) cyan 
C) green 
D) magenta 
E) yellow 
A) blue 
B) cyan 
C) green 
D) magenta 
E) yellow

Question 12

Choose the INCORRECT statement about isomers.

Accepted Answer

A) Structural isomers differ in structure or bond type. 
B) stereoisomers differ in the spatial arrangements among the ligands. 
C) Ionization isomers differ in the charge on the central ion. 
D) Linkage isomers differ in which atom is bonded to the central atom. 
E) Geometric isomerism is cis-trans isomerism. 
A) Structural isomers differ in structure or bond type. 
B) stereoisomers differ in the spatial arrangements among the ligands. 
C) Ionization isomers differ in the charge on the central ion. 
D) Linkage isomers differ in which atom is bonded to the central atom. 
E) Geometric isomerism is cis-trans isomerism.

Question 13

Enantiomers are isomers which are not chiral.

Accepted Answer

A) True 
 B)False

Question 14

What is the concentration of Cu2+(aq)if 0.235 g of CuCl2(s)is dissolved in 300.0 mL of 0.550 M NH3(aq)?
Kf ([Cu(NH3)4]2+)= 1.1 × 1013

Accepted Answer

A) 5.8 × 10-15 M 
B) 1.0 × 10-15 M 
C) 6.9 × 10-15 M 
D) 5.8 × 10-3 M 
E) 1.2 × 10-12 M 
A) 5.8 × 10-15 M 
B) 1.0 × 10-15 M 
C) 6.9 × 10-15 M 
D) 5.8 × 10-3 M 
E) 1.2 × 10-12 M

Question 15

Which of the following metal ions can have coordination numbers of either 4 or 6?

Accepted Answer

A) Ag+  
B) Ca2+  
C) Cu+ 
D) Ni2+  
E) Au+  
A) Ag+  
B) Ca2+  
C) Cu+ 
D) Ni2+  
E) Au+

Question 16

[CuCl4]2- absorbs light in the blue part of the visible spectrum,thereby appearing to have the color ________.

Accepted Answer

A) blue 
B) cyan 
C) green 
D) purple 
E) yellow 
A) blue 
B) cyan 
C) green 
D) purple 
E) yellow

Question 17

What is the correct IUPAC name for [AuCl4(H2O)2]-?

Accepted Answer

A) diaquatetrachloroaurate(III) 
B) diaquatetrachloroaurate(I) 
C) diaquatetrachlorogold(III) 
D) diaquatetrachlorogold(I) 
E) diaquatetrachlorogoldate(III) 
A) diaquatetrachloroaurate(III) 
B) diaquatetrachloroaurate(I) 
C) diaquatetrachlorogold(III) 
D) diaquatetrachlorogold(I) 
E) diaquatetrachlorogoldate(III)

Question 18

Choose the correct shape,weak or strong field,and number of unpaired electrons for [Co(ox)3]4-.

Accepted Answer

A) tetrahedral,weak,3 
B) tetrahedral,strong,3 
C) square planar,strong,3 
D) octahedral,weak,3 
E) octahedral,strong,5 
A) tetrahedral,weak,3 
B) tetrahedral,strong,3 
C) square planar,strong,3 
D) octahedral,weak,3 
E) octahedral,strong,5

Question 19

Choose the INCORRECT formula/name combination for ligands.

Accepted Answer

A) O2- / hydroxo 
B) NO / nitrosyl 
C) I- / iodo 
D) CN- / cyano 
E) SO42- / sulfato 
A) O2- / hydroxo 
B) NO / nitrosyl 
C) I- / iodo 
D) CN- / cyano 
E) SO42- / sulfato

Question 20

What is the concentration of Ag+(aq)if 0.125 g of AgC2H3O2(s)is placed in 100.0 mL of 1.00 M NH3(aq)?
Kf = 1.6 × 107 for [Ag(NH3)2]+

Accepted Answer

A) 4.8 × 10-10 M 
B) 5.6 × 10-10 M 
C) 8.0 × 10-8 M 
D) 8.3 × 10-6 M 
E) 7.5 × 10-3 M 
A) 4.8 × 10-10 M 
B) 5.6 × 10-10 M 
C) 8.0 × 10-8 M 
D) 8.3 × 10-6 M 
E) 7.5 × 10-3 M

Exam 24: Complex Ions and Coordination Compounds

A monodentate ligand can have only one lone pair of electrons.

Choose the INCORRECT formula/name combination for ligands.

The net formation constant for tetrachloromercurate(II)ion is 1.2 × 1015.Calculate the approximate standard electrode potential for: [HgCl4]2-(aq)+ 2 e- → Hg(l)+ 4 Cl-(aq) Given: Hg2+(aq)+ 2 e- → Hg(l)E° + 0.85 V

Of the following complex ions,two appear violet in aqueous solution,one appears purple,one appears blue-green,and one appears yellow.Which is yellow?

[Cu(H2O)4]2+ absorbs light in the yellow part of the visible spectrum,thereby appearing to have the color ________.

Choose the INCORRECT statement.

[Fe(CN)6]4- has how many unpaired electrons?

If it is assumed that [Fe(H2O)6]3+ can lose two hydrogens,what is the formula of the resulting ion when Fe3+ is placed in water?

Which element possesses the smallest number of unpaired electrons?

Which of the following metal ions has coordination numbers of 2 or 4?

Chlorophyll is a green pigment involved in the growth of plants.One type of chlorophyll is a complex.What color of light should plants grow best in?

Choose the INCORRECT statement about isomers.

Enantiomers are isomers which are not chiral.

What is the concentration of Cu2+(aq)if 0.235 g of CuCl2(s)is dissolved in 300.0 mL of 0.550 M NH3(aq)? Kf ([Cu(NH3)4]2+)= 1.1 × 1013

Which of the following metal ions can have coordination numbers of either 4 or 6?

[CuCl4]2- absorbs light in the blue part of the visible spectrum,thereby appearing to have the color ________.

What is the correct IUPAC name for [AuCl4(H2O)2]-?

Choose the correct shape,weak or strong field,and number of unpaired electrons for [Co(ox)3]4-.

Choose the INCORRECT formula/name combination for ligands.

What is the concentration of Ag+(aq)if 0.125 g of AgC2H3O2(s)is placed in 100.0 mL of 1.00 M NH3(aq)? Kf = 1.6 × 107 for [Ag(NH3)2]+

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

The Transition Elements

Nuclear Chemistry

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

Filters

The net formation constant for tetrachloromercurate(II)ion is 1.2 × 10¹⁵.Calculate the approximate standard electrode potential for: [HgCl₄]^2-(aq)+ 2 e^- → Hg(l)+ 4 Cl^-(aq) Given: Hg²⁺(aq)+ 2 e^- → Hg(l)E° + 0.85 V

[Cu(H₂O)₄]²⁺ absorbs light in the yellow part of the visible spectrum,thereby appearing to have the color ________.

[Fe(CN)₆]^4- has how many unpaired electrons?

If it is assumed that [Fe(H₂O)₆]³⁺ can lose two hydrogens,what is the formula of the resulting ion when Fe³⁺ is placed in water?

What is the concentration of Cu²⁺(aq)if 0.235 g of CuCl₂(s)is dissolved in 300.0 mL of 0.550 M NH₃(aq)? K_f ([Cu(NH₃)₄]²⁺)= 1.1 × 10¹³

[CuCl₄]^2- absorbs light in the blue part of the visible spectrum,thereby appearing to have the color ________.

What is the correct IUPAC name for [AuCl₄(H₂O)₂]^-?

Choose the correct shape,weak or strong field,and number of unpaired electrons for [Co(ox)₃]^4-.

What is the concentration of Ag⁺(aq)if 0.125 g of AgC₂H₃O₂(s)is placed in 100.0 mL of 1.00 M NH₃(aq)? K_f = 1.6 × 10⁷ for [Ag(NH₃₎₂]⁺