Question 1

How many stereoisomers are there for the compound [Fe(NH3) 4(Cl2) ]NO3?

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  0F) A) and C)
G) A) and B)

Question 2

A transition metal complex ion with octahedral geometry has a value of 4.4  ×	imes×  10-19 J for the crystal field splitting, λ\lambdaλ o.What is the wavelength for the absorption maximum, λ\lambdaλ max for this complex ion?

Accepted Answer

A)  5.0  ×	imes×  10-15 nm
B)  450 nm
C)  4.5  ×	imes× 10-16 nm
D)  520 mm
E)  640 nm F) All of the above
G) A) and C)

Question 3

The reaction,Cr(NH3) 63+(aq) + 3 en(aq)  ⇆\leftrightarrows⇆   Cr(en) 33+(aq) + 6 NH3(aq) ,where en represents ethylenediamine,has a small value for the enthalpy change, Δ\DeltaΔ Hrxn,yet the equilibrium constant for this reaction is large because __________

Accepted Answer

A)  the reaction rate is fast.
B)  the entropy change is large and positive.
C)  the enthalpy change is large enough to matter.
D)  the entropy change is large and negative.
E)  the equilibrium constant does not depend on the enthalpy change. F) All of the above
G) D) and E)

Question 4

A strong crystal field produces a large value for the crystal field splitting, Δ\DeltaΔ o,whereas a weak crystal field produces a small crystal field splitting.Which complex ion most likely contains a metal ion in a low-spin configuration?

Accepted Answer

A)  [NiBr4]2-
B)  [Fe(H2O) 6]2+
C)  [CoF6]3-
D)  [Cr(H2O) 2Cl4]2-
E)  [Co(CN) 6]3+ F) C) and D)
G) All of the above

Question 5

Identify the Lewis base in the following reaction: SO2(g) + H2O( 2(g) + H2O(   )  	o  H2SO3(aq)  A) SO2 B) H2O C) H2SO3 D) None of these is a base. E) All of these are bases. " class="answers-bank-image d-inline" rel="preload" > )  →	o→  H2SO3(aq)

Accepted Answer

A)  SO2
B)  H2O
C)  H2SO3
D)  None of these is a base.
E)  All of these are bases. F) All of the above
G) A) and E)

Question 6

What is the molar concentration of Ag+(aq) in a 1.00 M solution of Ag(NH3) 2+ with no excess ammonia? (Kf = 1.70  ×	imes×  107 for Ag(NH3) 2+)

Accepted Answer

A)  2.45  ×	imes×  10-3 M
B)  3.09  ×	imes×  10-3 M
C)  2.42  ×	imes×  10-4 M
D)  1.47  ×	imes× 10-8 M
E)  1.70  ×	imes×  10-8 M F) C) and E)
G) D) and E)

Question 7

Which of the following statements regarding hydrated metal ions is NOT correct?

Accepted Answer

A)  An aqueous metal ion can attract the electrons in the O-H bonds of the water molecules in its inner coordination sphere.
B)  Aqueous metal ions catalyze the autoionization of water,causing the solution to become more acidic.
C)  In solutions that are slightly acidic to slightly basic,most aqueous transition metal ions exist as complexes in which at least one ligand is OH-.
D)  Acid strength typically increases as the charge on the aqueous metal ion increases.
E)  Acid strength typically increases as the size of the aqueous metal ion decreases.F) None of the above
G) All of the above

Question 8

Describe the similarities and differences between a covalent bond and a coordinate covalent bond.

Accepted Answer

For both types of bonds,a pair of electrons is shared by two atoms.A covalent bond is formed when each atom contributes one electron.In contrast,a coordinate covalent bond is formed when one atom contributes both electrons.

Question 9

Chromium(III)hydroxide shows greater solubility in strongly basic aqueous solutions than in solutions that are weakly basic.Briefly explain why,and show any relevant reactions or equilibria.

Accepted Answer

Cr(OH)₃ can accept an additional OH^- at high pH,forming a soluble complex ion. Cr(OH)₃(s)+ OH^-(aq)$\to$ Cr(H₂O)₂(OH)₄^-(aq)

Question 10

What determines whether a transition metal ion is in a high-spin or a low-spin electron configuration?

Accepted Answer

The magnitude of the crystal field split...

Question 11

When NF3 reacts with BF3 to form F3NBF3,__________

Accepted Answer

A)  a complex ion is formed.
B)  an ionic bond is formed.
C)  the bond is formed by sharing an electron from NF3 and an electron from BF3.
D)  a coordinate covalent bond is formed.
E)  a covalent bond is formed.F) A) and E)
G) C) and D)

Question 12

One of the following solutions is acidic.Identify which,explain why,and write an appropriate reaction equation showing the production of hydronium ion.
CaCl2,CrCl2,MgCl2,NaClZ

Accepted Answer

CrCl₂,because the...

Question 13

When iron complexes with the nitrogen atoms in a porphyrin ring,the unit is called a __________

Accepted Answer

A)  myoglobin group.
B)  porphyrate.
C)  heme group.
D)  ferrate group.
E)  hemoglobin.F) A) and B)
G) A) and C) C

Question 14

The physical and chemical properties of porphyrins and chlorins depend primarily on which of the following?

Accepted Answer

A)  the identity of the central metal ion
B)  the charge on the central metal ion
C)  the species occupying the axial coordination sites of octahedral complexes
D)  the number and identity of the organic groups attached to the outside of the ring
E)  all of these are important.F) B) and D)
G) D) and E)

Question 15

For the coordination compound [Co(NH3)4Cl2]NO3,identify
(1)the coordination number of the metal ion.
(2)the oxidation number of the metal ion.
(3)the charge on the complex ion.
(4)the counter ion.

Accepted Answer

(1)6 (2)+3...

Question 16

Which one of the following compounds is called diamminetriaquahydroxochromium(II) nitrate?

Accepted Answer

A)  [Cr(NH3) 2(H2O) 3(OH) ](NO3) 2
B)  [Cr(NH3) 2(H2O) 3(OH) ]NO3
C)  [Cr(NH3) 2(H2O) 3](OH) NO3
D)  [Cr(NH3) 2(OH) ]NO3 • 3H2O
E)  [Cr(NH3) 2NO3]OH(aq) F) None of the above
G) B) and C)

Question 17

Which of the following species is a Lewis base?

Accepted Answer

A)  H+
B)  Cs+
C)  NF3
D)  NF4+
E)  NH4+F) C) and D)
G) C) and E)

Question 18

The complexes shown below are __________

Accepted Answer

A)  not isomers.
B)  coordination isomers.
C)  linkage isomers.
D)  enantiomers.
E)  stereoisomers.F) B) and C)
G) B) and D)

Question 19

Chelation therapy is often used to remove toxic metals such as lead from the body.One agent used in this therapy is dimercaptosuccinic acid,which is shown below.Identify the features in the structure of this molecule that make it an effective chelation agent.

Accepted Answer

The sulfur and/or oxygen atoms on this l...

Question 20

Given the following data,calculate the approximate value of the equilibrium constant at 298 K for the reaction,Ni(NH3) 62+(aq) + 3 en(aq)  ⇆\leftrightarrows⇆   Ni(en) 32+(aq) + 6 NH3(aq) ,where en represents ethylenediamine.
3) 62+(aq) + 3 en(aq)  \leftrightarrows   Ni(en) 32+(aq) + 6 NH3(aq) ,where en represents ethylenediamine.   A) 1.90  	imes  10-2 B) 52.7 C) 3.77 D) 1.44  	imes  103 E) 6.94  	imes  10-4 " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  1.90  ×	imes×  10-2
B)  52.7
C)  3.77
D)  1.44  ×	imes×  103
E)  6.94  ×	imes×  10-4 F) A) and C)
G) A) and B)

Exam 16: Coordination Compounds-The Colorful Chemistry of Metals

How many stereoisomers are there for the compound [Fe(NH₃) ₄(Cl₂) ]NO₃?

Correct Answer
verified

A transition metal complex ion with octahedral geometry has a value of 4.4 $\times$ 10^-¹⁹J for the crystal field splitting, $\lambda$ _o.What is the wavelength for the absorption maximum, $\lambda$ _max for this complex ion?

Correct Answer
verified

The reaction,Cr(NH₃) ₆³⁺(aq) + 3en(aq) $\leftrightarrows$ Cr(en) ₃³⁺(aq) + 6NH₃(aq) ,where en represents ethylenediamine,has a small value for the enthalpy change, $\Delta$ H_rxn,yet the equilibrium constant for this reaction is large because __________

Correct Answer
verified

A strong crystal field produces a large value for the crystal field splitting, $\Delta$ _o,whereas a weak crystal field produces a small crystal field splitting.Which complex ion most likely contains a metal ion in a low-spin configuration?

Correct Answer
verified

Correct Answer
verified

What is the molar concentration of Ag⁺(aq) in a 1.00 M solution of Ag(NH₃) ₂⁺with no excess ammonia? (K_f = 1.70 $\times$ 10⁷ for Ag(NH₃) ₂⁺)

Correct Answer
verified

Which of the following statements regarding hydrated metal ions is NOT correct?

Correct Answer
verified

Describe the similarities and differences between a covalent bond and a coordinate covalent bond.

Correct Answer
verified
For both types of bonds,a pair of electrons is shared by two atoms.A covalent bond is formed when each atom contributes one electron.In contrast,a coordinate covalent bond is formed when one atom contributes both electrons.

Chromium(III)hydroxide shows greater solubility in strongly basic aqueous solutions than in solutions that are weakly basic.Briefly explain why,and show any relevant reactions or equilibria.

Correct Answer
verified
Cr(OH)₃ can accept an additional OH^- at high pH,forming a soluble complex ion. Cr(OH)₃(s)+ OH^-(aq)\(\to\) Cr(H₂O)₂(OH)₄^-(aq)

What determines whether a transition metal ion is in a high-spin or a low-spin electron configuration?

Correct Answer
verified
The magnitude of the crystal field split...
View Answer

When NF₃ reacts with BF₃ to form F₃NBF₃,__________

Correct Answer
verified

One of the following solutions is acidic.Identify which,explain why,and write an appropriate reaction equation showing the production of hydronium ion. CaCl₂,CrCl₂,MgCl₂,NaClZ

Correct Answer
verified
CrCl₂,because the...
View Answer

When iron complexes with the nitrogen atoms in a porphyrin ring,the unit is called a __________

Correct Answer
verified
C

The physical and chemical properties of porphyrins and chlorins depend primarily on which of the following?

Correct Answer
verified

For the coordination compound [Co(NH₃)₄Cl₂]NO₃,identify (1)the coordination number of the metal ion. (2)the oxidation number of the metal ion. (3)the charge on the complex ion. (4)the counter ion.

Correct Answer
verified
(1)6 (2)+3...
View Answer

Which one of the following compounds is called diamminetriaquahydroxochromium(II) nitrate?

Correct Answer
verified

Which of the following species is a Lewis base?

Correct Answer
verified

The complexes shown below are __________

Correct Answer
verified

Chelation therapy is often used to remove toxic metals such as lead from the body.One agent used in this therapy is dimercaptosuccinic acid,which is shown below.Identify the features in the structure of this molecule that make it an effective chelation agent.

Correct Answer
verified
The sulfur and/or oxygen atoms on this l...
View Answer

Correct Answer
verified

Exam 16: Coordination Compounds-The Colorful Chemistry of Metals

How many stereoisomers are there for the compound [Fe(NH3) 4(Cl2) ]NO3?

Correct AnswerverifiedShow Answer

A transition metal complex ion with octahedral geometry has a value of 4.4 ×\times× 10-19 J for the crystal field splitting, λ\lambdaλ o.What is the wavelength for the absorption maximum, λ\lambdaλ max for this complex ion?

Correct AnswerverifiedShow Answer

The reaction,Cr(NH3) 63+(aq) + 3 en(aq) ⇆\leftrightarrows⇆ Cr(en) 33+(aq) + 6 NH3(aq) ,where en represents ethylenediamine,has a small value for the enthalpy change, Δ\DeltaΔ Hrxn,yet the equilibrium constant for this reaction is large because __________

Correct AnswerverifiedShow Answer

A strong crystal field produces a large value for the crystal field splitting, Δ\DeltaΔ o,whereas a weak crystal field produces a small crystal field splitting.Which complex ion most likely contains a metal ion in a low-spin configuration?

Correct AnswerverifiedShow Answer

Identify the Lewis base in the following reaction: SO2(g) + H2O( ) →\to→ H2SO3(aq)

Correct AnswerverifiedShow Answer

What is the molar concentration of Ag+(aq) in a 1.00 M solution of Ag(NH3) 2+ with no excess ammonia? (Kf = 1.70 ×\times× 107 for Ag(NH3) 2+)

Correct AnswerverifiedShow Answer

Which of the following statements regarding hydrated metal ions is NOT correct?

Correct AnswerverifiedShow Answer

Describe the similarities and differences between a covalent bond and a coordinate covalent bond.

Correct AnswerverifiedFor both types of bonds,a pair of electrons is shared by two atoms.A covalent bond is formed when each atom contributes one electron.In contrast,a coordinate covalent bond is formed when one atom contributes both electrons.

Chromium(III)hydroxide shows greater solubility in strongly basic aqueous solutions than in solutions that are weakly basic.Briefly explain why,and show any relevant reactions or equilibria.

Correct AnswerverifiedCr(OH)3 can accept an additional OH- at high pH,forming a soluble complex ion. Cr(OH)3(s)+ OH-(aq)\(\to\) Cr(H2O)2(OH)4-(aq)

What determines whether a transition metal ion is in a high-spin or a low-spin electron configuration?

Correct AnswerverifiedThe magnitude of the crystal field split...View AnswerShow Answer

When NF3 reacts with BF3 to form F3NBF3,__________

Correct AnswerverifiedShow Answer

One of the following solutions is acidic.Identify which,explain why,and write an appropriate reaction equation showing the production of hydronium ion. CaCl2,CrCl2,MgCl2,NaClZ

Correct AnswerverifiedCrCl2, because the...View AnswerShow Answer

When iron complexes with the nitrogen atoms in a porphyrin ring,the unit is called a __________

Correct AnswerverifiedC

The physical and chemical properties of porphyrins and chlorins depend primarily on which of the following?

Correct AnswerverifiedShow Answer

For the coordination compound [Co(NH3)4Cl2]NO3,identify (1)the coordination number of the metal ion. (2)the oxidation number of the metal ion. (3)the charge on the complex ion. (4)the counter ion.

Correct Answerverified(1)6 (2)+3...View AnswerShow Answer

Which one of the following compounds is called diamminetriaquahydroxochromium(II) nitrate?

Correct AnswerverifiedShow Answer

Which of the following species is a Lewis base?

Correct AnswerverifiedShow Answer

The complexes shown below are __________

Correct AnswerverifiedShow Answer

Chelation therapy is often used to remove toxic metals such as lead from the body.One agent used in this therapy is dimercaptosuccinic acid,which is shown below.Identify the features in the structure of this molecule that make it an effective chelation agent.

Correct AnswerverifiedThe sulfur and/or oxygen atoms on this l...View AnswerShow Answer

Given the following data,calculate the approximate value of the equilibrium constant at 298 K for the reaction,Ni(NH3) 62+(aq) + 3 en(aq) ⇆\leftrightarrows⇆ Ni(en) 32+(aq) + 6 NH3(aq) ,where en represents ethylenediamine.

Correct AnswerverifiedShow Answer

How many stereoisomers are there for the compound [Fe(NH₃) ₄(Cl₂) ]NO₃?

Correct Answer
verified

A transition metal complex ion with octahedral geometry has a value of 4.4 $\times$ 10^-¹⁹J for the crystal field splitting, $\lambda$ _o.What is the wavelength for the absorption maximum, $\lambda$ _max for this complex ion?

Correct Answer
verified

The reaction,Cr(NH₃) ₆³⁺(aq) + 3en(aq) $\leftrightarrows$ Cr(en) ₃³⁺(aq) + 6NH₃(aq) ,where en represents ethylenediamine,has a small value for the enthalpy change, $\Delta$ H_rxn,yet the equilibrium constant for this reaction is large because __________

Correct Answer
verified

A strong crystal field produces a large value for the crystal field splitting, $\Delta$ _o,whereas a weak crystal field produces a small crystal field splitting.Which complex ion most likely contains a metal ion in a low-spin configuration?

Correct Answer
verified

Correct Answer
verified

What is the molar concentration of Ag⁺(aq) in a 1.00 M solution of Ag(NH₃) ₂⁺with no excess ammonia? (K_f = 1.70 $\times$ 10⁷ for Ag(NH₃) ₂⁺)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
For both types of bonds,a pair of electrons is shared by two atoms.A covalent bond is formed when each atom contributes one electron.In contrast,a coordinate covalent bond is formed when one atom contributes both electrons.

Correct Answer
verified
Cr(OH)₃ can accept an additional OH^- at high pH,forming a soluble complex ion. Cr(OH)₃(s)+ OH^-(aq)\(\to\) Cr(H₂O)₂(OH)₄^-(aq)

Correct Answer
verified
The magnitude of the crystal field split...
View Answer

When NF₃ reacts with BF₃ to form F₃NBF₃,__________

Correct Answer
verified

One of the following solutions is acidic.Identify which,explain why,and write an appropriate reaction equation showing the production of hydronium ion. CaCl₂,CrCl₂,MgCl₂,NaClZ

Correct Answer
verified
CrCl₂,because the...
View Answer

Correct Answer
verified
C

Correct Answer
verified

For the coordination compound [Co(NH₃)₄Cl₂]NO₃,identify (1)the coordination number of the metal ion. (2)the oxidation number of the metal ion. (3)the charge on the complex ion. (4)the counter ion.

Correct Answer
verified
(1)6 (2)+3...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The sulfur and/or oxygen atoms on this l...
View Answer

Correct Answer
verified