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Chemistry > Transition Metals > Flashcards

Transition Metals Flashcards

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1
Q

Def Transition metal

A

An element that forms 1 stable ion with a partially full d sub shell

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2
Q

Characteristics of transition metals

A

electricity, conductor of heat
Forms coloured solutions
Forms complex ions
Act as a catalyst
Varied oxidation states

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3
Q

Def complex ion

A

Central transition metal surrounded by ligands

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4
Q

What is iron used as a catalyst in?

A

Haber process

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5
Q

What is vanadium catalyst used in

A

Contact process

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6
Q

What is MnO2 catalyst used in

A

Decomposition of H2O2

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7
Q

Def of a ligand

A

An ion that has a lone pair and donates both E to the transition metal to form a dative covalent bond

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8
Q

Transition metal shape with 2 Ligands

A

Linear

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9
Q

Transition metal shape with 4 Ligands

A

Tetrahedral

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10
Q

Transition metal shape with 6 Ligands

A

Octahedral

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11
Q

Why are transition metals coloured

A

Light -> absorb -> d subshell spilts into ground and excited state -> reflects light

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12
Q

Equation to Calc DeltaE or landa

A

E=hv=hc/Landa

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13
Q

What reduces vanadium

A

Zinc

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14
Q

Half equation for MnO4- to Mn2+

A

MnO4- + 8H+ + 5e- -> Mn2+ + 4H2O

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15
Q

Def Heterogeneous Catalyst

A

A catalyst that has different states of reactants

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16
Q

Def Homogenous Catalyst

A

A catalyst that is in the same phase as the reactants

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17
Q

Haber process reaction

A

N2 + 3H2 -> 2NH3

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18
Q

What is the haber process catalyst poisoned by

A

Sulphur impurities

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19
Q

Two equations involved in contact process

A

SO2 + V2O5 -> SO3 + V2O4
V2O4 + 1/2O2 -> V2O5

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20
Q

Reaction between S2O8^2- and I- ions

A

S2O8^2- + 2I -> 2SO4^2- + I2

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21
Q

Cu aqua ion with OH- or NH3 turns the colour of?

A

Blue precipitate

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22
Q

Cu aqua ion with excess OH- turns the colour of?

A

Blue precipitate

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23
Q

Cu aqua ion with excess NH3 turns the colour of?

A

Deep blue solution

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24
Q

Cu aqua ion with Na2Co3 turns the colour of?

A

Green-blue solution

25
Q

Fe aqua ion with OH- or NH3 turns the colour of?

A

Green precipitate

26
Q

Fe aqua ion with excess OH- turns the colour of?

A

Green precipitate

27
Q

Fe aqua ion with excess NH3 turns the colour of?

A

Green precipitate

28
Q

Fe aqua ion with Na2Co3 turns the colour of?

A

Green precipitate

29
Q

Al aqua ion with OH- or NH3 turns the colour of?

A

White precipitate

30
Q

Al aqua ion with excess OH- turns the colour of?

A

Colourless solution

31
Q

Al aqua ion with excess NH3 turns the colour of?

A

Colourless solution

32
Q

Al aqua ion with Na2Co3 turns the colour of?

A

White precipitate

33
Q

Fe3+ aqua ion with excess OH- turns the colour of?

A

Brown precipitate

34
Q

Fe3+ aqua ion with excess NH3 turns the colour of?

A

Brown precipitate

35
Q

Fe3+ aqua ion with Na2Co turns the colour of?

A

Brown precipitate

36
Q

Fe3+ aqua ion with OH- or NH3 turns the colour of?

A

Brown precipitate

37
Q

The colour of Fe3+ metal aqua ion solution?

A

Yellow solution

38
Q

Colour of MnO4-

A

Purple

39
Q

Colour of (Cr2O7)2-

A

Orange

40
Q

Colour of (VO2)+

A

Yellow

41
Q

Colour of VO2+

A

Blue

42
Q

Colour of V3+

A

Green

43
Q

Colour of Cr3+

A

Violet when H2O ligands but Green when substituted

44
Q

Colour of Fe3+

A

Purple when has 6 H2O ligands but yellow in solution

45
Q

Colour of V2+

A

Violet

46
Q

Mn2+ colour

A

Pale pink

47
Q

Fe2+ colour

A

Green

48
Q

Colour of Co2+

A

Pink

49
Q

Colour of Ni2+

A

Green

50
Q

Cu2+ colour

A

Blue

51
Q

Example of a Multidente ligand

A

EDTA^4-

52
Q

2 Example of Bidentate ligands

A

Ethane-1.2-diamine
Ethanedioate

53
Q

Example of a Square Planar (TM)

A

PtCl2(NH3)2

54
Q

Homogenous catalyst 2 equations

A

2(S2O8)2- +2Fe2+ -> 2Fe3+ + 2(SO4)2-

2Fe3+ + 2I- -> 2Fe3+ + I2

55
Q

Def of Autocatalysis

A

When the products can act as a catalyst

56
Q

2 Autocatalysis equations

A

4Mn+ + MnO4- + 16H+ -> 5Mn3+ + 4H2O

2Mn3+ + (C2O4)2- -> 2CO2 + 2Mn2+

57
Q

Define a Lewis acid

A

Electron pair acceptor

58
Q

Def a Lewis base

A

Electron pair donor

Chemistry (22 decks)

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