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координация 2 рк

Total questions: 98

Worksheet time: 49mins

Name
Class
Date
1.

Identify the cation in which the octahedral configuration is most distorted:

a)

[Ni(NH3)6]2+

b)

[Mn(NH3)6]2+

c)

[Fe(NH3)6]3+

d)

[Co(NH3)6]2+

2.

Alkali metal cations form stable complexes with ...

a)

crown ethers,  cryptandes

b)

trilons

c)

polymethylenediamine

d)

multi-core arenas

3.

The N(CH2COOH)3 compound has the common name ...

a)

Trilon A

b)

Trilon B

c)

Trilon C

d)

Trilon G

4.

Find the correct sequence of halide anions in the spectrochemical series:

a)

J-<Br-<Cl-<F-

b)

Br-<J-<F-<Cl-

c)

Br-<J-<Cl-<F-

d)

J-<F-<Cl-<Br-

5.

Cryptand- [2.1.1] binds sodium cations much more strongly than potassium. It's connected with…

a)

different radius of these ions, matching the size of the cavity of a cryptand to a cation

b)

different structure of the valence layer of these ions

c)

different polarizing action of these ions

d)

different coordination numbers of these ions

6.

Cryptand- [2.1.1] binds calcium cations much more strongly than strontium. It's connected with…

a)

different radius of these ions, matching the size of the cavity of a cryptand to a cation

b)

different structure of the valence layer of these ions

c)

different polarizing action of these ions

d)

different coordination numbers of these ions

7.

The stability of complexes of alkali metal cations with cryptands and crown ethers is determined by

a)

according to the size of the cavity to the radius of the ion

b)

the coincidence of the number of donor centers with a coordination number

c)

the degree of distortion of the valence angles

d)

the degree of polarization of donor centers

8.

The stability of complexes of alkaline earth metal cations with cryptands and crown ethers is determined by

a)

according to the size of the cavity to the radius of the ion

b)

the coincidence of the number of donor centers with a coordination number

c)

the degree of distortion of the valence angles

d)

the degree of polarization of donor centers

9.

Determine the bond order between rhenium atoms in the [Re2 Cl8]2- cluster

a)

4

b)

1

c)

2

d)

3

10.

Clusters are called complexes in which it is realized ...

a)

metal-to-metal bond

b)

pi-acceptor interaction

c)

pi-donor Interaction

d)

chelate structure

11.

The strongest trans-effect on the reaction rate of ligand exchange is shown by ligands having ...

a)

pi-acceptor interaction

b)

pi-donor Interaction

c)

strong field

d)

weak field

12.

The splitting energy of the valence orbitals of the central atom can be determined by studying ....... of complex.

a)

absorption spectrum

b)

boiling point

c)

solubility

d)

melting point

13.

The interaction of a number of typical ligands with electrophilic reagents in the presence of complexing ions is called ...

a)

template synthesis

b)

interfacial catalysis

c)

complexation

d)

ligand exchange

14.

The chemical science section that studies complex compounds is called ...

a)

coordination chemistry

b)

template synthesis

c)

complexation

d)

ligand exchange

15.

The process of interaction of a complex compound with an “extraneous” ligand is called...

a)

ligand exchange

b)

template synthesis

c)

complexation

d)

interfacial catalysis

16.

The process of interaction of an ion or atom with molecules or anions, leading to the formation of a coordination compound, is called …

a)

complexation

b)

template synthesis

c)

interfacial catalysis

d)

ligand exchange

17.

The process of transfer of inorganic ions into the organic phase to accelerate the process going on in it is called ...

a)

interfacial catalysis

b)

template synthesis

c)

complexation

d)

ligand exchange

18.

Coordination number never depends on ...

a)

the number of lone ligand pairs

b)

the position of the ligand in the spectrochemical series

c)

the oxidation state of the central atom

d)

the charge of the nucleus of the central atom

19.

The oxidation of Co (II) in Co (III) in the presence of a ligand occurs with a maximum EMF, if used ...

a)

strong oxidizer and strong field ligand

b)

weak oxidizer and ligand of weak field

c)

a strong oxidizing agent and a weak field ligand

d)

weak oxidizer and strong field ligand

20.

The interaction of alkali metals with liquid ammonia is accelerated in the presence of iron salts mainly due to ...

a)

increasing the polarity of the N-H bond during complexation, Coordination of ammonia with iron

b)

galvanic corrosion

c)

Binding of Solvated Electrons

d)

ammonia oxidation

21.

The pink color of boiled sausages is due to the addition of a ligand forming a complex with myoglobin. It…

a)

nitrite ion

b)

chloride ion

c)

cellulose

d)

Glutaminate ion

22.

The toxicity of carbon monoxide is due to the formation of a strong complex with hemoglobin. It is formed by ...

a)

sigma - and-binding with Fe2+

b)

sigma - and pi-binding with heme

c)

sigma - and pi-binding with Fe3+

d)

pi-binding with heme

23.

The toxicity of cyanide ion is due to complex formation with cellular respiration enzymes - cytochromes. The complex is formed by ...

a)

sigma - and-binding with Fe3+

b)

sigma - and-binding with Fe2+

c)

sigma - and-binding with heme

d)

sigma - and-binding with

24.

Cyanide ion is a normal part of synthetic ...

a)

Vitamin B12

b)

Chlorophyll

c)

hemoglobin

d)

Hemocyanin

25.

The color of the substance observed in transmitted and reflected light is different if the compound ...

a)

has photoluminescence

b)

has isomers

c)

has optically active

d)

has several absorption maxima

26.

Indicate the general properties inherent in tetraiodomercurates (II) of silver (I) and copper (I).

a)

the ability to change color with temperature

b)

Sublimation ability

c)

the ability to dissolve in water in large quantities

d)

the ability to dissolve in benzene and toluene

27.

The color of complex compounds depends only on the nature of the ligand for the elements ...

a)

IIB, IA, IIA groups

b)

IVB group

c)

VIIIB group

d)

Group VIB

28.

Silver and copper (I) tetraiodomercurates change their color reversibly when heated…

a)

second order phase transition

b)

first order phase transition

c)

reversible decay to non-complex iodides

d)

the formation of free iodine

29.

Cis-trans isomerism is inherent ...

a)

square and octahedral complexes

b)

square complexes

c)

square and tetrahedral complexes

d)

trigonal-bipyramidal complexes

30.

The most common coordination number is ...

a)

6

b)

2

c)

7

d)

1

31.

The splitting energy of the d-orbitals, knowing the maximum absorption of the complex, can be determined by the formula:

a)

h/vc

b)

h/yc

c)

Ecl

d)

h/yv

32.

Complexation reactions in aqueous solutions in most cases are not accompanied by a noticeable decrease in entropy, because ...

a)

the number of particles does not change much (aquacomplex is destroyed)

b)

entropy factor does not affect the complexation

c)

the number of water molecules in an aqueous solution is very large.

d)

entropy and so close to zero

33.

In an aqueous solution of a copper (II) salt, complexation with ammonia (1), ethylene diamine (2), ethylene glycol (3) and 18-crown-6 (4) occurs. Without performing calculations, arrange the processes in order of increasing entropy increments.

a)

1<2=3<4

b)

1<2<<3=4

c)

1=2<<3=4

d)

4<2=3<1

34.

In an aqueous solution of a nikel (II) salt, complexation with ammonia (1), ethylene diamine (2), ethylene glycol (3) and 18-crown-6 (4) occurs. Without performing calculations, arrange the processes in order of increasing entropy increments.

a)

1<2=3<4

b)

1<2<<3=4

c)

1=2<<3=4

d)

4<2=3<1

35.

In an aqueous solution of a iron (II) salt, complexation with ammonia (1), ethylene diamine (2), ethylene glycol (3) and 18-crown-6 (4) occurs. Without performing calculations, arrange the processes in order of increasing entropy increments.

a)

1<2=3<4

b)

1<2<<3=4

c)

1=2<<3=4

d)

4<2=3<1

36.

In an aqueous solution of a cobalt (II) salt, complexation with ammonia (1), ethylene diamine (2), ethylene glycol (3) and 18-crown-6 (4) occurs. Without performing calculations, arrange the processes in order of increasing entropy increments.

a)

1<2=3<4

b)

1<2<<3=4

c)

1=2<<3=4

d)

4<2=3<1

37.

In an aqueous solution of a zinc (II) salt, complexation with ammonia (1), ethylene diamine (2), ethylene glycol (3) and 18-crown-6 (4) occurs. Without performing calculations, arrange the processes in order of increasing entropy increments.

a)

1<2=3<4

b)

1<2<<3=4

c)

1=2<<3=4

d)

4<2=3<1

38.

Determine the concentration of ammonia at which the complete dissolution of 0.01 mole of silver chloride in 1 liter will occur. AgCl = 1.6.10-10

a)

0.2

b)

0.1

c)

0.3

d)

0.4

39.

Determine the concentration of ammonia at which the complete dissolution of 0.01 mole of silver bromide in 1 liter will occur. AgBr = 6.10 . 10-13

a)

3.3

b)

2.2

c)

1.1

d)

4.4

40.

Determine the concentration of ammonia at which the complete dissolution of 0.01 mole of silver iodide in 1 liter will occur. AgJ = 8.3 . 10-17

a)

necessary ammonia concentration unattainable

b)

200

c)

300

d)

400

41.

Among the proposed complex compounds, the darkest color has …

a)

KFe[Fe(CN)6]

b)

K2Fe[Fe(CN)6]

c)

Fe2[Fe(CN)6]

d)

K4[Fe(CN)6]

42.

Among the proposed complex compounds, the darkest color has …

a)

[Cr((NH3)2 CO)2]3 [Cr(CN)6]2

b)

K3[Cr(CN)6]

c)

[Cr((NH3)2 CO)2]3 SO4

d)

[Cr((NH3)2 CO)2] [CrF4]

43.

Among the proposed complex compounds, the darkest color has …

a)

[Pt(NH3)4][PtF6]

b)

K2[Pt(CN)4]

c)

K2[PtF4]

d)

[Pt(NH3)6][PtF6]2

44.

Specify a pair of metals most likely to form clusters:

a)

Mo, W

b)

Cu, Ni

c)

Ni, Mo

d)

Mo, Cu

45.

The dark color of complex compounds with metal atoms in different degrees of oxidation, most likely due to electron transitions between ...

a)

metal atoms with different degrees of oxidation

b)

a metal atom in a low oxidation state and a ligand

c)

a metal atom in a high oxidation state and a ligand

d)

ligands located at different atoms

46.

Among the proposed iron complexes, the lowest melting and boiling points has …

a)

[Fe(CO)5]

b)

K3[Fe(CN)6]

c)

K4[FeF6]

d)

K4[Fe(CN)6]

47.

Specify a pair of metals most likely to form clusters:

a)

Nb, V

b)

Fe, W

c)

Cu, Nb

d)

V, Co

48.

Noble gas clathrates are ...

a)

inclusion compounds

b)

molecular complexes

c)

covalent complexes

d)

simplex connections

49.

The toxicity of which particle is not directly related to complexation:

a)

F-

b)

CN-

c)

CO

d)

NH2 C6H5

50.

Determine the sum of the coefficients of the reaction of the formation of tetraaminocopper (II) sulfate from anhydrous copper sulfate in liquid ammonia:

a)

6

b)

12

c)

10

d)

8

51.

Determine the sum of the coefficients of the reaction of the formation of sulfate tetraaminocopper (II) from copper sulfate pentahydrate in an aqueous medium:

a)

11

b)

13

c)

15

d)

9

52.

The reaction of obtaining metal carbonyls by direct interaction of carbon monoxide (II) and metal is catalyzed by ...

a)

hydrogen

b)

oxygen

c)

carbon monoxide (IV)

d)

helium

53.

Specify the correct formula of the complex compound formed by the interaction of potassium hydroxide with 18-crown-6:

a)

[K(C12H24O6)]OH

b)

[K(C12H24O6)OH]

c)

[K(C12H24O6)2]OH

d)

[K(C18H36O6)]OH

54.

The Gibbs energy for the complexation reaction can be determined by considering the formula:

a)

b)

c)

d)

55.

Specify the correct formula of the complex of sodium chloride with cryptand [2.2.2]

a)

b)

c)

d)

56.

Specify the correct formula of the complex compound formed by the interaction of strontium hydroxide with 18-crown-6:

a)

b)

c)

d)

57.

Specify the correct formula of the complex of calcium chloride with cryptand [2.2.2]

a)

b)

c)

d)

58.

Determine the sum of the coefficients in the equation

a)

12

b)

8

c)

10

d)

6

59.

Determine the coefficient of the reducing agent in the equation

a)

1

b)

3

c)

4

d)

2

60.

Determine the coefficient of oxidant in equation

a)

2

b)

3

c)

4

d)

6

61.

Determine the sum of the coefficients in the equation

a)

6

b)

4

c)

2

d)

8

62.

Determine the coefficient of oxidant in equation

a)

2

b)

1

c)

3

d)

4

63.

Determine the coefficient of the reaction product in the equation

a)

1

b)

2

c)

3

d)

4

64.

Determine the coefficient of the reducing agent in the equation

a)

1

b)

2

c)

3

d)

4

65.

Determine the sum of the coefficients in the equation

a)

11

b)

7

c)

8

d)

10

66.

Determine the coefficient of oxidant in equation

a)

2

b)

1

c)

3

d)

4

67.

As an antiknock for motor fuels is often used ...

a)

tetraethyl lead

b)

ferrocene

c)

tetracarbonyl nickel

d)

Pentacarbonyl iron

68.

The founder of the chemistry of complex compounds is considered ...

a)

Werner

b)

Mendeleev

c)

Wiener

d)

Zeize

69.

The complex of trialkyl aluminum with titanium (III) chloride in industry is known as ...

a)

Ziegler-Natta catalyst

b)

Salt Riot

c)

Salt Zeize

d)

Prussian blue

70.

Which of these anions cannot form a complex with a metal-nitrogen bond?

a)

b)

c)

d)

71.

Dianion cycloctatetraene with the formation of the complex Co (III) takes ... coordination positions.

a)

2

b)

4

c)

6

d)

8

72.

Specify a cation capable of being a ligand in the complexation reaction:

a)

b)

c)

d)

73.

Specify cation, the most prone to the formation of clusters:

a)

b)

c)

d)

74.

Specify the predominant type of chemical bond between metal atoms in clusters:

a)

covalent

b)

metal

c)

ionic

d)

multi-center electron-deficient

75.

Specify a theory that allows you to predict the reactivity of the complexes in the processes of ligand exchange:

a)

this theory has not yet been developed

b)

crystal field

c)

ligand fields

d)

molecular orbital method

76.

(Triphenylphosphinyl) -tricarbonyl nickel can be used as a catalyst to obtain from acetylene

a)

benzene

b)

styrene

c)

cyclooctatetraene

d)

Vinylacetylene

77.

Tetracarbonyl nickel can be used as a catalyst for acetylene production.

a)

cyclooctatetraene

b)

benzene

c)

styrene

d)

Vinylacetylene

78.

In terms of kinetic control with the highest yield compound is formed, which ...

a)

is obtained with greater speed

b)

is thermodynamically more stable

c)

least soluble

d)

is removed as a gas

79.

In terms of thermodynamic control with the highest yield compound is formed, which ...

a)

is thermodynamically more stable

b)

is obtained with greater speed

c)

least soluble

d)

is removed as a gas

80.

Phosphoric acid quite easily decomposes the red blood salt when heated, because ...

a)

Factors A and B are active

b)

a strong iron phosphate complex is formed

c)

Hydrogen cyanide is removed

d)

oxidation of cyanide ions occurs

81.

Phosphoric acid quite easily decomposes the yellow blood salt when heated, because ...

a)

Hydrogen cyanide is removed

b)

a strong iron phosphate complex is formed

c)

Factors A and B are active

d)

oxidation of cyanide ions occurs

82.

For industrial production of gold from poor ores, the oxidation reaction is most often used ...

a)

oxygen in the presence of sodium cyanide

b)

bromine in the aquatic environment

c)

sodium hypochlorite in hydrochloric acid

d)

chlorine in the presence of sodium chloride

83.

For the laboratory determination of gold, the oxidation reaction is most often used ...

a)

aqua regia

b)

bromine in the aquatic environment

c)

sodium hypochlorite in hydrochloric acid

d)

oxygen in the presence of sodium cyanide

84.

As an indicator in the complexometric determination of water hardness is most often used ...

a)

eriochrome black

b)

zinc salt of trylon B

c)

murexide

d)

dimethylglyoxime

85.

As an indicator in the complexometric determination of iron (II) most often used ...

a)

dimethylglyoxime

b)

eriochrome black

c)

murexide

d)

zinc salt of trylon B

86.

The most versatile complexing agent for photocolorimetric determination of various cations can be considered ...

a)

dithizone

b)

eriochrome black

c)

murexide

d)

dimethylglyoxime

87.

The most rare coordination number is

a)

7

b)

4

c)

5

d)

6

88.

Specify the L-Me-L valent angle characteristic of square complexes:

a)

90°

b)

109°

c)

180°

d)

120°

89.

Specify the L-Me-L valent angle characteristic of tetrahedral complexes:

a)

109°

b)

90°

c)

180°

d)

120°

90.

Specify the L-Me-L valent angle characteristic of octahedral complexes:

a)

90°

b)

109°

c)

180°

d)

120°

91.

Specify the L-Me-L bond angle characteristic of trigonal-bipyramidal complexes:

a)

120° and  90°

b)

109°

c)

180°

d)

120°

92.

Specify the L-Me-L valent angle characteristic of tetragonal-pyramidal complexes:

a)

90°

b)

109°

c)

180°

d)

120°

93.

Specify a pair of metals most likely to form clusters:

a)

Re, W

b)

Cu, Ni

c)

Ni, Mo

d)

Mo, Cu

94.

Specify a pair of metals most likely to form clusters:

a)

Mo, Re

b)

Cu, Ni

c)

Ni, Mo

d)

Mo, Cu

95.

Specify the cryptand structural formula [2.1.1]:

a)

b)

c)

d)

96.

Specify the cryptand structural formula [1.1.1]:

a)

b)

c)

d)

97.

Specify the structural formula of monothiocryptand [1.1.1]:

a)

b)

c)

d)

98.

As an antiknock for motor fuels is often used ...

a)

cyclopentadienyl tricarbonyl manganese (II)

b)

ferrocene

c)

tetracarbonyl nickel

d)

Pentacarbonyl iron

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