Chemistry Chapter 24 Molecules which are nonsuperimposable mirror images

56) In the compound K4[Fe(CN)6], the oxidation state of iron and its coordination number, respectively,

are ________.

A) -4 and ten

B) 0 and ten

C) +4 and four

D) +2 and six

E) -4 and six

57) In the cation [CrCl2(H2O)4]+, the oxidation state of chromium and its coordination number,

respectively, are ________.

A) -3 and two

B) +3 and six

C) 0 and four

D) +2 and six

E) -4 and six

58) In the cation [CoCl2(en)2]+, the oxidation state of cobalt and its coordination number, respectively, are

________.

A) -3 and two

B) +2 and six

C) +4 and four

D) +3 and six

E) -4 and six

59) If a central ion has a coordination number of 4 we might expect the geometry of the complex ion to be

________.

A) octahedral

B) cubical

C) trigonal bipyramidal

D) square planar

E) trigonal planar

60) A compound has the empirical formula CoCl3 ∙ 5NH3. One mole of it yields two moles of silver

chloride when treated with silver nitrate. Ammonia is not removed by treatment with concentrated

sulfuric acid. A reasonable formula for the compound is ________.

A) [Co(NH3)5]Cl3

B) CoCl3 ∙ 5NH3

C) [Co(NH3)4Cl]Cl2 ∙ NH3

D) [Co(NH3)5Cl]Cl2

E) [Co(NH3)4Cl2]Cl ∙ NH3

61) A compound has the empirical formula CoCl3 ∙ 5NH3. One mole of it yields three moles of silver

chloride when treated with silver nitrate. Ammonia is not removed by treatment with concentrated

sulfuric acid. A reasonable formula for the compound is ________.

A) [Co(NH3)5]Cl3

B) CoCl3 ∙ 5NH3

C) [Co(NH3)4Cl]Cl2 ∙ NH3

D) [Co(NH3)5Cl]Cl2

E) [Co(NH3)4Cl2]Cl ∙ NH3

62) Conductivity experiments indicate that dichlorotetraamine-palladium (IV) chloride is composed of 3

moles of ions per mole of compound. However, only 2 moles of AgCl per mole of compound are

precipitated rapidly when silver nitrate solution is added to a solution of the palladium compound. What

is the probable structure of the complex ion?

A) octahedral

B) square planar

C) tetrahedral

D) linear

E) trigonal planar

63) The correct formula of triamminediaquachlorocobalt (III) iodide is ________.

A) [Co(NH3)2(H2O)3Cl]I2

B) [Co(NH3)3(H2O)2Cl]I3

C) [Co(NH3)3(H2O)2Cl]I2

D) [Co(NH3)3(H2O)2Cl]I

E) [Co(NH3)3(H2O)2I]Cl2

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64) The correct name for [Ag(NH3)2]+ is ________.

A) silver amide

B) diamminesilver(I)ion

C) silver ammoniate

D) silver nitride

E) silver(I) diammine ion

65) Write the correct formula for tetrachloroplatinate (II) ion.

A) [PtCl4]2-

B) PtCl3Cl

C) [Pt4Cl]–

D) [PtCl3]–Cl–

E) [PtCl2]42+

66) What is the correct name of the following ion: [Zn(CN)4]2-

A) zinc quadracyanide

B) tetracyanozincate(II)

C) zinc cyanide

D) tetracyanozinc(II)

E) cyanozinc(IV)

67) Give the correct name for [Ni(NH3)4]2+.

A) tetraamminonickelate(II)

B) nickel amine

C) tetraamminenickel(II)

D) nickel tetraamine

E) tetraamminonickel(IV)

68) Give the correct name for [Al(H2O)4]3+.

A) hydrated aluminum

B) aluminum hydrate

C) tetraaquoaluminate(VI)

D) tetraaquaaluminum(III)

E) tetrawateraluminum(IV)

69) Give the correct name for [Fe(H2O)4(OH)2]+.

A) diaquotetrahydroxoiron(III)

B) tetrahydroxodiaquoferrate(III)

C) hydrated iron hydroxide

D) tetrawaterdihydroxoiron(III)

E) tetraaquadihydroxoiron(III)

70) Give the correct name for [Fe(CO)4].

A) tetracarbonyliron(0)

B) iron carbon monoxide

C) carbonylferrate(IV)

D) tetracarbonylferrate(0)

E) iron carbonyl

71) Give the correct name for [AuF4]–.

A) gold fluoride

B) tetrafluoroaurate(III)

C) gold tetrafluoride

D) tetrafluorogold(III)

E) tetrafluoride gold

72) Give the correct name for [Fe(CN)6]4-.

A) hexayanoiron(II)

B) iron hexacyanide

C) hexacyanoferrate(II)

D) hexacyanide iron(II)

E) hexacyanoferrate(III)

73) What is the correct IUPAC name for [Co(NH3)6]2+?

A) hexammoniacobaltate(II)

B) hexaamminecobaltate(II)

C) hexammoniacobalt(II)

D) hexaamminecobalt(II)

E) hexaamminecobaltium(II)

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

A) diaquatetrachloroaurate(III)

B) diaquatetrachloroaurate(I)

C) diaquatetrachlorogold(III)

D) diaquatetrachlorogold(I)

E) diaquatetrachlorogoldate(III)

75) What is the correct IUPAC name for K3[Co(NO2)6]?

A) tripotassiumhexanitritocobalt(0)

B) tripotassiumhexanitritocobalt(III)

C) potassium hexanitritocobaltate(III)

D) potassium hexanitritocobalt(III)

E) potassium hexanitratocobalt(III)

76) The two different compounds [Cu(NH3)4][Fe(CN)4(H2O)2] and [Cu(CN)4]Fe(NH3)4(H2O)2] are

examples of ________.

A) optical isomers

B) linkage isomers

C) ionization isomers

D) geometric isomers

E) coordination isomers

77) The difference between coordination of Co2+ with NO2– by an oxygen-cobalt bonding compared to a

nitrogen-cobalt bonding results in ________.

A) coordination isomers

B) geometric isomers

C) ionization isomers

D) linkage isomers

E) optical isomers

78) Molecules which are nonsuperimposable mirror images of each other are called ________.

A) achiralomers

B) enantiomers

C) diastereomers

D) cis/trans isomers

E) geometers

79) Isomers such as the two forms of the ion [Co(NH3)2Cl4]– that differ only in the way the atoms are

oriented in space are called, in general ________.

A) ionization isomers

B) crystal field isomers

C) hybridization isomers

D) optical isomers

E) cis-trans isomers

80) Which of the following complexes has no geometric isomers?

A) [Pt(NH3)4F2]

B) [Pt(NH3)F5]–3

C) [Co(NH3)4F2]+

D) [Co(NH3)3F3]

E) [Co(NH3)2F4]–

81) Ligands approaching in an octahedral pattern cause some orbitals to be raised in energy. How many

orbitals are on the lower energy level?

A) 1

B) 2

C) 3

D) 4

E) 5

82) Ligands approaching in an octahedral pattern cause some orbitals to be raised in energy. How many

orbitals are on the higher energy level?

A) 1

B) 2

C) 3

D) 4

E) 5

83) Ligands approaching in an square planar pattern cause some orbitals to be raised in energy. How

many orbitals are on the highest energy level?

A) 1

B) 2

C) 3

D) 4

E) 5

84) Ligands approaching in a tetrahedral pattern cause some orbitals to be raised in energy. How many

orbitals are on the lower energy level?

A) 1

B) 2

C) 3

D) 4

E) 5

85) Which of the following ions is highest in the spectrochemical series? en, I–, SCN–, OH–, CN–

A) en

B) SCN–

C) CN–

D) OH–

E) I–

86) Which of the following ions is highest in the spectrochemical series? NO2–, NH3, Br–, ox2-, H2O

A) ox2-

B) Br–

C) H2O

D) NO2–

E) NH3

87) The model for bonding in complex ions that considers the metal-ion/ligand bonding as an electrostatic

attraction of the metal ion nucleus for ligand electrons, with repulsions between ligand electrons and the

electrons of the central metal ion, is called the ________.

A) atomic orbital theory

B) crystal field theory

C) complexation theory

D) molecular orbital theory

E) VSEPR theory

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

A) 2

B) 0

C) 4

D) 3

E) 1

89) Which of the following magnetic/geometric descriptions is most likely for the [ZnCl4]2- ion?

A) diamagnetic/octahedral

B) paramagnetic/tetrahedral

C) paramagnetic/square planar

D) diamagnetic/tetrahedral

E) diamagnetic/square planar

90) Based on concepts from both crystal field theory and valence bond theory, the most likely

combination of molecular orbital, magnetic and geometric descriptions for the [Fe(H2O)6]2+ ion is

________.

A) sp2d/diamagnetic/square planar

B) sp2d/paramagnetic/square planar

C) sp3d2/diamagnetic/octahedral

D) sp3d2/paramagnetic/octahedral

E) sp2d/paramagnetic/tetrahedral

91) Which is the most plausible and consistent combination of hybrid orbital notation and

magnetic/geometric description of [CoF6]3-?

A) sp2d/diamagnetic/square planar

B) sp2d/paramagnetic/square planar

C) sp3d2/diamagnetic/octahedral

D) sp3d2/paramagnetic/octahedral

E) sp2d/paramagnetic/tetrahedral

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

color ________.

A) blue

B) cyan

C) green

D) purple

E) yellow

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

________.

A) blue

B) cyan

C) green

D) purple

E) yellow

94) Of the following complex ions: [CrCl(NH3)5]2+, [Cr(NH3)6]3+, [CrCl(H2O)5]2+, [Cr(H2O)6]3+, one

appears pink, one yellow, one blue-green and one violet. Which is blue-green?

A) [Cr(NH3)6]3+

B) [CrCl(NH3)5]2+

C) [CrCl(H2O)5]2+

D) [Cr(H2O)6]3+

E) both [CrCl(H2O)5]2+ and [CrCl(NH3)5]2+

95) Of the following complex ions: [CoCl(NH3)5]2+, [Co(NH3)6]3+, [Co(en)3]3+, [Co(H2O)6]3+, one

appears pink, two are yellow, and one blue. Which is blue?

A) [Co(NH3)6]3+

B) [CoCl(NH3)5]2+

C) [Co(H2O)6]3+

D) [Co(en)3]3+

E) both [Co(en)3]3+ and [Co(H2O)6]3+

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96) As ethylenediamine is added to an aqueous solution of [Ni(H2O)6]2+, the water molecules are

replaced two at a time by ethylenediamine to produce the sequence of ions: [Ni(H2O)6]2+,

[Ni(en)(H2O)4]2+, [Ni(en)2(H2O)2]2+, and [Ni(en)3]2+. How does the color change through the

sequence?

A) The color changes toward red with the addition of ethylenediamine.

B) The color changes toward purple with the addition of ethylenediamine.

C) Red, yellow, purple, blue with the addition of ethylenediamine.

D) There is no color change with the addition of ethylenediamine.

E) The color change cannot be predicted with the addition of ethylenediamine.

97) 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

A) -0.39 V

B) -0.63 V

C) +0.70 V

D) +0.41 V

E) zero

98) Why is an aqueous solution of Fe3+ acidic?

A) Iron ions attract hydroxide ions from water leaving hydrogen ions.

B) Iron ions react with water to produce hydrogen ions.

C) Iron ions attract water molecules to form a complex.

D) Iron ions form a complex with water then lose hydrogen ions from its water ligands.

E) Iron ions force the dissociation of water.

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99) 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?

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-

100) 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?

A) blue

B) cyan

C) green

D) magenta

E) yellow

101) Which of the following can function as a bidentate ligand?

A) CO

B) OH –

C) N H3

D) C2O42-

102) Which of the following can function as a chelating agent?

A) SH–

B) H2O

C) H2NCH2CO2–

D) SCN –

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103) Which ion would you expect to have the largest crystal field splitting, △?

A) [Rh(CN)6]4-

B) [Rh(CN)6]3-

C) [Rh(H2O)6]2+

D) [Rh(H2O)6]3+

104) Which of the following species is diamagnetic?

A) an isolated gas-phase Cr3+ ion

B) a high-spin octahedral Cr2+ complex

C) an isolated gas-phase Cu2+ ion

D) a low-spin octahedral Co3+ complex