Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Chapter 22, Problem 18PS

(a)

Interpretation Introduction

Interpretation: The name or formula of the given ions or compounds has to be determined.

Concept introduction:

Coordination compounds: The compounds having coordination covalent bonds which form when metal ions react with polar molecules or anions.

Ligands: The ions or molecules that forms coordination covalent bond with metal ions in a coordination compound. Ligands should have minimum one lone pair of electron, where it donates two electrons to the metal. Metal atom accepts the electron pair from a ligand forming a coordination bond.

Monodentate ligand is ligands which donate only one pair of electrons to form bond with metal. It only makes one bond with metal. Polydentate ligand forms two or more coordination bond with metal ions to form a complex.

Oxidation number: The total number of electrons in an atom after losing or gaining electrons to make a bond with another atom. It indicates the charge of an ion.

The rule to name a coordination complex is,

  1. 1. The cation is named before the anion.
  2. 2. Within a complex ion, the Ligands are arranged in an alphabetical order followed by the metal ion name. The anionic Ligand should ends with a letter –o, the neutral Ligand are called by the molecules (some common name for some exception).
  3. 3. When more Ligands are present, Greek prefixes like di, tri, tetra, penta, and hexa to specify their number.
  4. 4. The oxidation number of the metal is represented in roman numerals immediately following the metal ion name.
  5. 5. If the complex ion is an anion, the metal name should end with –ate.

Spectrochemical series: The list of ligands arranged in an ascending order of (Δ)(the splitting of d-orbitals in presence of various ligands).

I-<Br-<SCN-<Cl-<S2-<F-<OH-<O2-<H2O<NCS-<edta4-<NH3<  en<NO2-<CN-<COweak-fieldincreasing(Δ)strong-fieldligandsligands

(a)

Expert Solution
Check Mark

Answer to Problem 18PS

The formula is [Cr(H2O)4(Cl)2]Cl

Explanation of Solution

The oxidation state of central metal atom Cr is 3+. Tetra means there are four ions or molecule whereas di means two ions or molecules.

The ligands can be written as,

  aquaH2OchloroCl

The oxidation state is,

  Oxidation number ofH2O=0Oxidation number ofCl=1

The complex is neutral

Therefore,

According to spectrochemical series,

The formula of the complex is,

  [Cr(H2O)4(Cl)2]Cl

(b)

Interpretation Introduction

Interpretation: The name or formula of the given ions or compounds has to be determined.

Concept introduction:

Coordination compounds: The compounds having coordination covalent bonds which form when metal ions react with polar molecules or anions.

Ligands: The ions or molecules that forms coordination covalent bond with metal ions in a coordination compound. Ligands should have minimum one lone pair of electron, where it donates two electrons to the metal. Metal atom accepts the electron pair from a ligand forming a coordination bond.

Monodentate ligand is ligands which donate only one pair of electrons to form bond with metal. It only makes one bond with metal. Polydentate ligand forms two or more coordination bond with metal ions to form a complex.

Oxidation number: The total number of electrons in an atom after losing or gaining electrons to make a bond with another atom. It indicates the charge of an ion.

The rule to name a coordination complex is,

  The cation is named before the anion.

  1. 1. Within a complex ion, the Ligands are arranged in an alphabetical order followed by the metal ion name. The anionic Ligand should ends with a letter –o, the neutral Ligand are called by the molecules (some common name for some exception).
  2. 2 When more Ligands are present, Greek prefixes like di, tri, tetra, penta, and hexa to specify their number.
  3. 3 The oxidation number of the metal is represented in roman numerals immediately following the metal ion name.
  4. 4 If the complex ion is an anion, the metal name should end with –ate.

Spectrochemical series: The list of ligands arranged in an ascending order of (Δ)(the splitting of d-orbitals in presence of various ligands).

I-<Br-<SCN-<Cl-<S2-<F-<OH-<O2-<H2O<NCS-<edta4-<NH3<  en<NO2-<CN-<COweak-fieldincreasing(Δ)strong-fieldligandsligands

(b)

Expert Solution
Check Mark

Answer to Problem 18PS

The name is Pentaamminesulfatochromium(III)chloride

Explanation of Solution

The ligands are arranged in an alphabetical order, followed by the metal name (chromium). There are five NH3 molecules and one SO4 molecule.

The ligands can be written as,

  NH3ammineSO4sulfato

The oxidation state of central metal atom Ni is 3+ and is represented by Roman numeral (III). The overall charge of the complex is zero.

Therefore,

The name of the ion is,

  Pentaamminesulfatochromium(III)chloride

(c)

Interpretation Introduction

Interpretation: The name or formula of the given ions or compounds has to be determined.

Concept introduction:

Coordination compounds: The compounds having coordination covalent bonds which form when metal ions react with polar molecules or anions.

Ligands: The ions or molecules that forms coordination covalent bond with metal ions in a coordination compound. Ligands should have minimum one lone pair of electron, where it donates two electrons to the metal. Metal atom accepts the electron pair from a ligand forming a coordination bond.

Monodentate ligand is ligands which donate only one pair of electrons to form bond with metal. It only makes one bond with metal. Polydentate ligand forms two or more coordination bond with metal ions to form a complex.

Oxidation number: The total number of electrons in an atom after losing or gaining electrons to make a bond with another atom. It indicates the charge of an ion.

The rule to name a coordination complex is,

  The cation is named before the anion.

  1. 2. Within a complex ion, the Ligands are arranged in an alphabetical order followed by the metal ion name. The anionic Ligand should ends with a letter –o, the neutral Ligand are called by the molecules (some common name for some exception).
  2. 5 When more Ligands are present, Greek prefixes like di, tri, tetra, penta, and hexa to specify their number.
  3. 6 The oxidation number of the metal is represented in roman numerals immediately following the metal ion name.
  4. 7 If the complex ion is an anion, the metal name should end with –ate.

Spectrochemical series: The list of ligands arranged in an ascending order of (Δ)(the splitting of d-orbitals in presence of various ligands).

I-<Br-<SCN-<Cl-<S2-<F-<OH-<O2-<H2O<NCS-<edta4-<NH3<  en<NO2-<CN-<COweak-fieldincreasing(Δ)strong-fieldligandsligands

(c)

Expert Solution
Check Mark

Answer to Problem 18PS

The formula is Na2[CoCl4]

Explanation of Solution

The oxidation state of central metal atom Co is 2+. Tetra means there are four ions or molecule. The metal name is ended with –ate so the complex ion is an anion.

The ligands can be written as,

  chloroCl

The charge of the complex is 3

  (3+)+(5×0)+(1)=2+

Therefore,

According to spectrochemical series,

The formula of the complex is,

  Na2[CoCl4]

(d)

Interpretation Introduction

Interpretation: The name or formula of the given ions or compounds has to be determined.

Concept introduction:

Coordination compounds: The compounds having coordination covalent bonds which form when metal ions react with polar molecules or anions.

Ligands: The ions or molecules that forms coordination covalent bond with metal ions in a coordination compound. Ligands should have minimum one lone pair of electron, where it donates two electrons to the metal. Metal atom accepts the electron pair from a ligand forming a coordination bond.

Monodentate ligand is ligands which donate only one pair of electrons to form bond with metal. It only makes one bond with metal. Polydentate ligand forms two or more coordination bond with metal ions to form a complex.

Oxidation number: The total number of electrons in an atom after losing or gaining electrons to make a bond with another atom. It indicates the charge of an ion.

The rule to name a coordination complex is,

  The cation is named before the anion.

  • Within a complex ion, the Ligands are arranged in an alphabetical order followed by the metal ion name. The anionic Ligand should ends with a letter –o, the neutral Ligand are called by the molecules (some common name for some exception).
  • When more Ligands are present, Greek prefixes like di, tri, tetra, penta, and hexa to specify their number.
  • The oxidation number of the metal is represented in roman numerals immediately following the metal ion name.
  • If the complex ion is an anion, the metal name should end with –ate.

Spectrochemical series: The list of ligands arranged in an ascending order of (Δ)(the splitting of d-orbitals in presence of various ligands).

I-<Br-<SCN-<Cl-<S2-<F-<OH-<O2-<H2O<NCS-<edta4-<NH3<  en<NO2-<CN-<COweak-fieldincreasing(Δ)strong-fieldligandsligands

(d)

Expert Solution
Check Mark

Answer to Problem 18PS

The name is Tris(oxalato)ferrate(III)

Explanation of Solution

The ligands are arranged in an alphabetical order, followed by the metal name (iron). There are three C2O4 molecules.

The ligands can be written as,

  C2O4oxalato

The oxidation state is,

  Oxidation number ofC2O4=2

The oxidation state of central metal atom Fe is 3+ and is represented by Roman numeral (III). The overall charge of the complex is 3. The metal is an anion in the complex

Therefore,

The name of the ion is,

  Tris(oxalato)ferrate(III)

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Chapter 22 Solutions

Chemistry & Chemical Reactivity

Ch. 22.3 - 2. What is the oxidation number of the metal in...Ch. 22.3 - Prob. 3RCCh. 22.3 - Prob. 4RCCh. 22.4 - What types of isomers are possible for the...Ch. 22.4 - Prob. 1RCCh. 22.4 - Prob. 2RCCh. 22.4 - Prob. 3RCCh. 22.4 - Prob. 4RCCh. 22.4 - Prob. 1QCh. 22.5 - Prob. 1CYUCh. 22.5 - Prob. 1RCCh. 22.5 - Prob. 2RCCh. 22.6 - Prob. 1QCh. 22.6 - Prob. 2QCh. 22.6 - Prob. 3QCh. 22.6 - Prob. 4QCh. 22.6 - Prob. 1CYUCh. 22.6 - Prob. 1RCCh. 22.6 - How are the d electrons of Pt distributed in a...Ch. 22.6 - What are the electron configurations for Nd and...Ch. 22.6 - Prob. 3CSCh. 22.6 - Prob. 4CSCh. 22.6 - Prob. 5CSCh. 22 - Prob. 1PSCh. 22 - Prob. 2PSCh. 22 - Identify a cation of a first series transition...Ch. 22 - Match up the isoelectronic ions on the following...Ch. 22 - Prob. 5PSCh. 22 - Prob. 6PSCh. 22 - Which of the following ligands is expected to be...Ch. 22 - One of the following nitrogen compounds or ions is...Ch. 22 - Prob. 9PSCh. 22 - Prob. 10PSCh. 22 - Prob. 11PSCh. 22 - Prob. 12PSCh. 22 - Prob. 13PSCh. 22 - Prob. 14PSCh. 22 - Prob. 15PSCh. 22 - Prob. 16PSCh. 22 - Give the name or formula for each ion or compound,...Ch. 22 - Prob. 18PSCh. 22 - Prob. 19PSCh. 22 - Prob. 20PSCh. 22 - Prob. 21PSCh. 22 - Prob. 22PSCh. 22 - Prob. 23PSCh. 22 - Prob. 24PSCh. 22 - Prob. 25PSCh. 22 - Prob. 26PSCh. 22 - Prob. 27PSCh. 22 - Prob. 28PSCh. 22 - Prob. 29PSCh. 22 - Prob. 30PSCh. 22 - In water, the titanium(III) ion, [Ti(H2O)6]3+, has...Ch. 22 - Prob. 32PSCh. 22 - Prob. 33GQCh. 22 - Prob. 34GQCh. 22 - How many unpaired electrons are expected for...Ch. 22 - Prob. 36GQCh. 22 - Which of the following complex ions is (are)...Ch. 22 - Prob. 38GQCh. 22 - How many geometric isomers are possible for the...Ch. 22 - For a tetrahedral complex of a metal in the first...Ch. 22 - Prob. 41GQCh. 22 - Prob. 42GQCh. 22 - Prob. 43GQCh. 22 - A platinum-containing compound, known as Magnuss...Ch. 22 - Prob. 45GQCh. 22 - Prob. 46GQCh. 22 - Prob. 47GQCh. 22 - How many geometric isomers of the complex ion...Ch. 22 - Prob. 49GQCh. 22 - Prob. 50GQCh. 22 - Prob. 51GQCh. 22 - The square-planar complex Pt(en)Cl2 has chloride...Ch. 22 - The complex [Mn(H2O)6]2+ has five unpaired...Ch. 22 - Experiments show that K4[Cr(CN)6] is paramagnetic...Ch. 22 - Give a systematic name or the formula for the...Ch. 22 - When CrCI3 dissolves in water, three different...Ch. 22 - Prob. 57GQCh. 22 - The glycinate ion, H2NCH2CO2, formed by...Ch. 22 - Prob. 59GQCh. 22 - Nickel and palladium both form complexes of the...Ch. 22 - The transition metals form a class of compounds...Ch. 22 - Cerium, as noted in Applying Chemical Principles:...Ch. 22 - Prob. 64GQCh. 22 - Two different coordination compounds containing...Ch. 22 - Prob. 71SCQCh. 22 - Prob. 69SCQCh. 22 - Prob. 70SCQ
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