Question 1

Determine the molar concentration of Ag⁺(aq) ions in a 1.00 M solution of AgCl₂^- with no excess chloride. Given: K_f = 2.50 * 10⁵ for AgCl₂^-.

Accepted Answer

The answer of Determine the molar concentration of Ag⁺(aq) ions...

Question 2

The coordination number for copper in the compound K₂[CuCl₄] is ________

Accepted Answer

The coordination number of a metal ion is the number of ligands that are directly bonded to it. In K2[CuCl4], the copper ion is bonded to four chloride ions, so the coordination number is 4.

Question 3

The coordination number around the Co ion in [Co(NH₃)₆][CrF₆] is ________

Accepted Answer

The coordination number of a metal ion is defined as the number of atoms or molecules directly bonded to the metal ion. In the given compound, the ligand [Co(NH₃)₆] has two nitrogen atoms and four sulfur atoms that can coordinate with the central cobalt ion. Therefore, the coordination number of cobalt in this compound is 6.

Question 4

In Na₂[Zn(CN)₄], the counter ion is ________, and in [Co(NH₃)₄Cl₂]NO₃, the counter ion is ________.

Accepted Answer

In Na₂[Zn(CN)₄], Na⁺ is the counter ion. In [Co(NH₃)₄Cl₂]NO₃, NO₃⁻ is the counter ion.

Question 5

Lead poisoning used to be treated by injections of ethylenediaminetetraacetic acid, EDTA. If the concentration of EDTA in the blood of a patient is 3.0*10^-⁹ M and the formation constant for Pb(EDTA)²^- is 2.0 * 10¹⁸, what is the concentration ratio of free toxic Pb²⁺ to lead-EDTA complex in the blood?

Accepted Answer

The answer of Lead poisoning used to be treated by...

Question 6

In K₄[Fe(CN)₆], the counter ion is ________, and in [Co(NH₃)₄Cl₂]NO₃, the counter ion is ________.

Accepted Answer

In K₄[Fe(CN)₆], the counter ion is likely K+ because it is commonly used as a counter ion in coordination compounds. In [Co(NH₃)₄Cl₂]NO₃, the counter ion is likely NO3-, which is commonly used as a counter ion in coordination compounds. The options with CN^- or Cl^- as the counter ion are less likely because they are not commonly used in coordination compounds as counter ions.

Question 7

The coordination number for [Pt(NH₃)₄]Cl₂ is ________

Accepted Answer

The coordination number in a complex is the number of atoms or ions immediately surrounding a central metal atom. In the given complex, [Pt(NH3)2Cl2], Pt is surrounded by two ammonia (NH3) molecules and two chloride (Cl) ions, making the coordination number 4.

Question 8

Lead poisoning used to be treated by injections of ethylenediaminetetraacetic acid, EDTA. If the concentration of EDTA in the blood of a patient is 3.0 *10^-⁷ M and the formation constant for Pb(EDTA)²^-is 2.0 *10¹⁸, what is the concentration ratio of free toxic Pb²⁺ to lead-EDTA complex in the blood?

Accepted Answer

The concentration ratio of free Pb²⁺ to Pb(EDTA)²⁻ is calculated using the inverse of the formation constant, which is 1/(2.0 * 10¹⁸), giving approximately 1.7 * 10⁻¹².

Question 9

For the coordination compound K₃[Fe(CN)₆], identify, in order, the charge on the complex ion, the oxidation state of the metal, and the coordination number of the metal. If none of A-D is correct, respond E.

Accepted Answer

- The complex ion is [Fe(CN)6]3-, which has a charge of 3-.
- The oxidation state of Fe in the complex ion is +3, since each CN ligand has a charge of -1 and there are six of them coordinated to Fe. The overall charge on the complex ion is 3-, so the charge of Fe must be +3 to balance it out.
- The coordination number of Fe in the complex ion is 6, since it is coordinated to six CN ligands.

Question 10

How many ions are formed when [Co(NH₃)₅Cl]Cl₂ dissolves in water?

Accepted Answer

The complex [Co(NH₃)₅Cl]Cl₂ contains one cobalt ion, one chloride ion, and one counterion (Cl) for a total of three ions.

Question 11

What is the shape of Zn(OH)₄²^-?

Accepted Answer

The Zn(OH)₄²⁻ ion has a tetrahedral shape due to the sp³ hybridization of the central zinc atom, which is surrounded by four hydroxide ions.

Question 12

The coordination number for Pt(NH₃)₄²⁺ is ________

Accepted Answer

The coordination number is the number of ligand donor atoms bonded to the central metal ion. In Pt(NH3)4^2+, there are four NH3 ligands, each donating one pair of electrons to the platinum ion, resulting in a coordination number of 4.

Question 13

What do you predict for the geometry of Ti(H₂O)₆³⁺?

Accepted Answer

The Ti(H₂O)₆³⁺ complex ion is expected to have an octahedral geometry because it involves a transition metal (Ti³⁺) surrounded by six water ligands, which is typical for octahedral coordination.

Question 14

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

Accepted Answer

The correct answer is A because the molar concentration of Ag+(aq) in a 1.00 M solution of Ag(NH3)2+(aq) with no excess ammonia can be calculated using the dissociation constant Kf for the complex ion Ag(NH3)2+. The Kf value is 1.70 * 10^7, which means that the equilibrium constant for the dissociation reaction Ag(NH3)2+(aq) <=> Ag+(aq) + 2 NH3(aq) is 1.70 * 10^7. This means that at equilibrium, the concentration of Ag+(aq) will be much lower than the concentration of Ag(NH3)2+(aq). Using the ICE table, we can calculate the concentration of Ag+(aq) to be 2.45 * 10^-3 M.

Question 15

The complex ion Fe(H₂O)₆³⁺ has 5 unpaired electrons in 3d orbitals. Given this information, which iron orbitals would you expect to be hybridized and used to form the coordinate covalent bonds with water?

Accepted Answer

The answer of The complex ion Fe(H₂O)₆³⁺ has 5 unpaired...

Question 16

What is the oxidation state of the cobalt atom in the [Co(NH₃)₄Cl₂]⁺ complex ion?

Accepted Answer

In the complex ion [Co(NH₃)₄Cl₂]⁺, the compound must be a neutral species, and since the overall charge is 1+, the oxidation state of cobalt must be +3 to balance the charges.

Question 17

Which orbital hybridization in a metal atom would be appropriate for octahedral complexes?

Accepted Answer

In octahedral complexes, the metal atom typically undergoes $sp^3d^2$ hybridization to form six equivalent hybrid orbitals directed towards the corners of an octahedron, which matches the description in option E.

Question 18

What is the shape of the complex ion CoF₆³^-?

Accepted Answer

The complex ion contains one central cobalt ion (Co) surrounded by six ligands: four anionic sulfurs (S1) and two neutral ligands (FS1U1B16 and P13S1S1P0). This gives a coordination number of 6, suggesting octahedral geometry.

Question 19

What would you predict for the hybridization of the Zn orbitals, based on the tetrahedral geometry of Zn(OH)₄²^-?

Accepted Answer

In a tetrahedral geometry, the central atom typically undergoes sp³ hybridization, which involves the mixing of one s orbital and three p orbitals to form four equivalent sp³ hybrid orbitals.

Question 20

The coordination number around the Cr ion in [Co(NH₃)₆][CrF₆] is ________

Accepted Answer

The coordination number of a metal ion refers to the number of ligands that are directly bound to the metal ion. In this compound, the Cr ion is surrounded by six ligands - four sulfur atoms from the NH₃ ligand and two fluoride ions from the CrF₆ ligand. Therefore, the coordination number of Cr in this compound is 6.

Quiz 17: Metal Ions: Colorful and Essential

Determine the molar concentration of Ag⁺(aq) ions in a 1.00 M solution of AgCl₂^- with no excess chloride. Given: K_f = 2.50 * 10⁵ for AgCl₂^-.

The coordination number for copper in the compound K₂[CuCl₄] is ________

The coordination number around the Co ion in [Co(NH₃) ₆][CrF₆] is ________

In Na₂[Zn(CN) ₄], the counter ion is , and in [Co(NH₃) ₄Cl₂]NO₃, the counter ion is .

In K₄[Fe(CN) ₆], the counter ion is , and in [Co(NH₃) ₄Cl₂]NO₃, the counter ion is .

The coordination number for [Pt(NH₃) ₄]Cl₂ is ________

For the coordination compound K₃[Fe(CN) ₆], identify, in order, the charge on the complex ion, the oxidation state of the metal, and the coordination number of the metal. If none of A-D is correct, respond E.

How many ions are formed when [Co(NH₃) ₅Cl]Cl₂ dissolves in water?

What is the shape of Zn(OH) ₄²^-?

The coordination number for Pt(NH₃) ₄²⁺ is ________

What do you predict for the geometry of Ti(H₂O) ₆³⁺?

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

The complex ion Fe(H₂O) ₆³⁺ has 5 unpaired electrons in 3d orbitals. Given this information, which iron orbitals would you expect to be hybridized and used to form the coordinate covalent bonds with water?

What is the oxidation state of the cobalt atom in the [Co(NH₃) ₄Cl₂]⁺ complex ion?

Which orbital hybridization in a metal atom would be appropriate for octahedral complexes?

What is the shape of the complex ion CoF₆³^-?

What would you predict for the hybridization of the Zn orbitals, based on the tetrahedral geometry of Zn(OH) ₄²^-?

The coordination number around the Cr ion in [Co(NH₃) ₆][CrF₆] is ________

Quiz 17: Metal Ions: Colorful and Essential

Determine the molar concentration of Ag+(aq) ions in a 1.00 M solution of AgCl2- with no excess chloride. Given: Kf = 2.50 * 105 for AgCl2-.

The coordination number for copper in the compound K2[CuCl4] is ________

The coordination number around the Co ion in [Co(NH3) 6][CrF6] is ________

In Na2[Zn(CN) 4], the counter ion is ________, and in [Co(NH3) 4Cl2]NO3, the counter ion is ________.

In K4[Fe(CN) 6], the counter ion is ________, and in [Co(NH3) 4Cl2]NO3, the counter ion is ________.

The coordination number for [Pt(NH3) 4]Cl2 is ________

For the coordination compound K3[Fe(CN) 6], identify, in order, the charge on the complex ion, the oxidation state of the metal, and the coordination number of the metal. If none of A-D is correct, respond E.

How many ions are formed when [Co(NH3) 5Cl]Cl2 dissolves in water?

What is the shape of Zn(OH) 42-?

The coordination number for Pt(NH3) 42+ is ________

What do you predict for the geometry of Ti(H2O) 63+?

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

The complex ion Fe(H2O) 63+ has 5 unpaired electrons in 3d orbitals. Given this information, which iron orbitals would you expect to be hybridized and used to form the coordinate covalent bonds with water?

What is the oxidation state of the cobalt atom in the [Co(NH3) 4Cl2]+ complex ion?

Which orbital hybridization in a metal atom would be appropriate for octahedral complexes?

What is the shape of the complex ion CoF63-?

What would you predict for the hybridization of the Zn orbitals, based on the tetrahedral geometry of Zn(OH) 42-?

The coordination number around the Cr ion in [Co(NH3) 6][CrF6] is ________

Determine the molar concentration of Ag⁺(aq) ions in a 1.00 M solution of AgCl₂^- with no excess chloride. Given: K_f = 2.50 * 10⁵ for AgCl₂^-.

The coordination number for copper in the compound K₂[CuCl₄] is ________

The coordination number around the Co ion in [Co(NH₃) ₆][CrF₆] is ________

In Na₂[Zn(CN) ₄], the counter ion is , and in [Co(NH₃) ₄Cl₂]NO₃, the counter ion is .

In K₄[Fe(CN) ₆], the counter ion is , and in [Co(NH₃) ₄Cl₂]NO₃, the counter ion is .

The coordination number for [Pt(NH₃) ₄]Cl₂ is ________

For the coordination compound K₃[Fe(CN) ₆], identify, in order, the charge on the complex ion, the oxidation state of the metal, and the coordination number of the metal. If none of A-D is correct, respond E.

How many ions are formed when [Co(NH₃) ₅Cl]Cl₂ dissolves in water?

What is the shape of Zn(OH) ₄²^-?

The coordination number for Pt(NH₃) ₄²⁺ is ________

What do you predict for the geometry of Ti(H₂O) ₆³⁺?

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

The complex ion Fe(H₂O) ₆³⁺ has 5 unpaired electrons in 3d orbitals. Given this information, which iron orbitals would you expect to be hybridized and used to form the coordinate covalent bonds with water?

What is the oxidation state of the cobalt atom in the [Co(NH₃) ₄Cl₂]⁺ complex ion?

What is the shape of the complex ion CoF₆³^-?

What would you predict for the hybridization of the Zn orbitals, based on the tetrahedral geometry of Zn(OH) ₄²^-?

The coordination number around the Cr ion in [Co(NH₃) ₆][CrF₆] is ________