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WorksheetsCHM431Make-up Quiz
Total questions: 21
Worksheet time: 11mins
Berry pseudo-rotation occurs in complexes with coordination number
6
5
4
3
Square planar complexes are formed by --- metal ions
d4
d6
d8
d10
What is the geometry of [NiCN4]2- ?
Square planar
Tetrahedral
Octahedral
Square pyramidial
Identify the complex ion with a different geometry
[PtCl4]2-
[AuCl4]-
[NiCl4]2-
[PdCl4]2-
Which of the following can exhibit cis-trans isomerism?
[Zn(en)Cl2]
[Pt(en)Cl2]
[Pt(en)2Cl2]2+
[Cr(en)2(ox)]+
Identify the bidentate chelating ligand.
Oxalate ion
4,4’-bipyridine
diethylenetriamine
isothiocyanate ion
In an inner sphere reaction ----
electron transfer occurs through the solvent
the coordination sphere of both ions remain intact
there is ligand exchange between both reacting partners
the coordination sphere of both species remain intact
In an associative reaction, the incoming ligand forms a bond with the metal before the leaving group departs
Always true
Sometimes true
False
The rate determining step in the substitution of an octahedral complex is
inner step
association step
dissociation step
interchange step
The most stable complex ion is .....
[Fe(H2O)6]3+
[Fe(C2O4)3]3-
[Fe(NH3)6]3+
[FeCl6]3-
Give the correct IUPAC name for Na[Cr(H2O)2(C2O4)2]. 3H2O
sodium diaquadioxalatochromate(III) trihydrate
diaquadioxalatochromate(III) trihydrate sodium
dioxalatodiaquachromium(III) trihydrate
sodium diaquadioxalatochromium(III) trihydrate
Substitution in a kinetically inert complex has a rate constant lower than 1 sec-1.
Always true
sometimes true
Never true
Identify the kinetically stable species
[CuCl4]2-
[Co(NH3)6]3+
Fe(CO)5
[Cu(NH3)(H2O)]2+
Which statement is correct for trans influence and trans effect?
Trans influence is kinetic while trans effect is thermodynamic
Both trans effect and trans influence are kinetic
Both trans effect and trans influence are thermodynamic
Trans influence is thermodynamic while trans effect is kinetic
In an inner sphere reaction, if the electron transfer step is rate determining, the rate of reaction depends on the following except
Nature of bridging ligand
Ability of ligand for electron transfer
Size of the ligand
Ease of reducibility of the ligand
An inner sphere electron transfer involving two inert complexes will have -- as the rate determining step.
Formation of bridged complex
Electron transfer step
Break up of successor complex
Formation of precursor complex
In the vibrationally excited state, the reducing agent ........
loses electron and the metal ligand bond length increases
gains electron and metal-ligand bond length increases
loses electron and the metal-ligand bond length decreases.
loses electron and the metal ligand bond length increases
How does the rate of electron transfer depend on the change in bond length for a self-exchange reaction?
the larger the change the faster the reaction
the larger the change the slower the reaction
Rate of reaction is independent of bond length
What is the coordination number of the copper in the complex [Cu(en)2Cl]?
3
4
5
The overall charge on the complex ion pentacyanonitritomanganate(II) is
(a)
Give your matriculation number
(a)
