OCR A Transition Ions colours

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19 Terms

1
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Cu2+(aq)

Pale blue

2
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Cu(OH)2(s)

Pale blue

3
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[Cu(NH3)4(H2O)2]2+(aq)

Dark blue

4
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CuCl42-(aq)

Yellow

5
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CuI(s) (reduction of Cu2+ with I-)

White ppt in brown iodine solution

6
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Fe2+(aq)

Pale green

7
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Fe3+(aq)

Pale yellow

8
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Mn2+(aq)

Pale pink

9
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MnO4-(aq)

Purple

10
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Cr2O72-(aq)

Orange

11
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Cr3+(aq)

Violet (normally appears green)

12
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Fe(OH)3(s)

Orange-brown

13
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Fe(OH)2(s)

Green

14
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CoCl42-(aq)

Blue solution

15
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Cr(OH)3(s)

Grey-green ppt

16
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[Cr(NH3)6]3+(aq)

Purple solution

17
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[Cr(OH)6]3-

Dark green

18
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CrO42-(aq)

Yellow

19
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Mn(OH)2(s)

Pale brown ppt

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