Inorganic Transition Metal colours and reactions

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Chemistry

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49 Terms

1
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What colour is V2+

Purple

2
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What colour is V3+

Green

3
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What colour is VO2+

Blue

4
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What colour is VO2+

Yellow

5
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What colour is Cr2+

Blue

6
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What colour is Cr3+

Green (violet in water)

7
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What colour is Cr2O72-

Orange

8
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What colour is CrO42-

Yellow

9
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What colour is [Cr(H2O)6]3+

Violet/green (solution)

10
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What colour is [Cr(H2O)3(OH)3]

Green (ppt)

11
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What colour is [Cr(OH)6]3-

Green (solution)

12
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What colour is [Fe(H2O)6]2+

Pale green (solution)

13
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What colour is [Fe(H2O)4(OH)2]

Green (ppt)

14
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What colour is [Fe(H2O)6]3+

Yellow/brown (solution)

15
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What colour is [Fe(H2O)3(OH)3]

Brown (ppt)

16
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What colour is [Co(H2O)6]2+

Pink (solution)

17
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What colour is [Co(H2O)4(OH)2]

Blue (ppt)

18
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What colour is [Cu(H2O)6]2+

Blue (solution)

19
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What colour is [Cu(H2O)4(OH)2]

Blue (ppt)

20
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What colour is [Cr(NH3)6]3+

Purple/violet (solution)

21
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What colour is [Co(NH3)6]2+

Yellow (brown) (solution)

22
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What colour is [CoCl4]2-

Blue (solution)

23
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What colour is [Cu(NH3)4(H2O)2]2+

Dark blue (solution)

24
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What colour is [CuCl4]2-

Yellow (solution) (mixture may appear green)

25
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What colour is [Cu(EDTA)]2-

pale blue (solution)

26
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[Fe(H2O)6]2+ + NaOH (drops) →

Fe(H2O)4(OH)2

27
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[Fe(H2O)6]2+ + NaOH (excess) →

No change (Fe(H2O)4(OH)2)

28
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[Fe(H2O)6]2+ + NH3 (drops) →

Fe(H2O)4(OH)2

29
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[Fe(H2O)6]2+ + NH3 (excess) →

No change (Fe(H2O)4(OH)2)

30
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[Fe(H2O)6]3+ + NaOH (drops) →

Fe(H2O)3(OH)3

31
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[Fe(H2O)6]3+ + NaOH (excess) →

No change (Fe(H2O)3(OH)3)

32
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[Fe(H2O)6]3+ + NH3 (drops) →

Fe(H2O)3(OH)3

33
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[Fe(H2O)6]3+ + NH3 (excess) →

No change (Fe(H2O)3(OH)3)

34
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[Cu(H2O)6]2+ + NaOH (drops) →

Cu(H2O)4(OH)2

35
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[Cu(H2O)6]2+ + NaOH (excess) →

No change (Cu(H2O)4(OH)2)

36
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[Cu(H2O)6]2+ + NH3 (drops) →

Cu(H2O)4(OH)2

37
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[Cu(H2O)6]2+ + NH3 (excess) →

[Cu(NH3)4(H2O)2]2+

38
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[Cr(H2O)6]3+ + NaOH (drops) →

Cr(H2O)3(OH)3

39
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[Cr(H2O)6]3+ + NaOH (excess) →

[Cr(OH)6]3-

40
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[Cr(H2O)6]3+ + NH3 (drops) →

Cr(H2O)3(OH)3

41
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[Cr(H2O)6]3+ + NH3 (excess) →

[Cr(NH3)6]3+

42
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[Co(H2O)6]2+ + NaOH (drops) →

Co(H2O)4(OH)2

43
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[Co(H2O)6]2+ + NaOH (excess) →

No change (Co(H2O)4(OH)2)

44
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[Co(H2O)6]2+ + NH3 (drops) →

Co(H2O)4(OH)2

45
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[Co(H2O)6]2+ + NH3 (excess) →

[Co(NH3)6]2+

46
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Vanadium catalyst in sulphur dioxide to sulphur trioxide equations

SO2 + V2O5 → SO3 + V2O4
O2 + 2V2O4 → 2V2O5

47
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what is the autocatalyst in the ethanedioate and manganate ion reaction?

Mn2+ ions (which are produced in the reaction)

48
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iron catalyst in peroxodisulfate ions to sulphate ions equations

S2O82- + 2Fe2+ → 2SO42- + 2Fe3+
2I- + 2Fe3+ → I2 + 2Fe2+

49
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peroxodisulfate ions to sulphate ions equation

S2O82- + 2I- (+ Fe2+/Fe3+ catalyst) → 2SO42- + I2