Colours of ions Flashcards

1
Q

[Cu(H2O)6]^2+

A

pale blue

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2
Q

[Cu(OH)2(H2O)4]

A

pale blue ppt

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3
Q

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

A

dark blue

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4
Q

CuCl4^2-

A

yellow

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5
Q

CuI(s) / I2(aq)

A

white ppt
brown solution

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6
Q

CuSO4(aq)

A

blue solution

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7
Q

Cu(s)

A

brown

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8
Q

[Cr(H2O)6]3+ (aq)

A

pale purple

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9
Q

(Cr(OH)3) (s)

A

dark green ppt

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10
Q

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

A

purple solution

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11
Q

[Cr(OH)6]^3- (aq)

A

dark green solution

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12
Q

Cr2O7^2- (aq)

A

orange solution

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13
Q

CrO4^2-

A

yellow

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14
Q

[Mn(H2O)6]^2+ (aq)

A

pale pink solution

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15
Q

Mn(OH)2 (s)

A

pale brown ppt

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16
Q

[Fe(H2O)6]^2+ (aq)

A

pale green solution

17
Q

Fe(OH)2 (s)

A

dark green ppt

18
Q

[Fe(H2O)6]^3+

A

yellow solution

19
Q

Fe(OH)3 (s)

A

orange-brown ppt

20
Q

MnO4-

A

purple

21
Q

Mn2+

A

pale pink

22
Q

NH3 dropwise to Cu^2+

A

Cu(OH)2 (s)

23
Q

excess NH3 to Cu^2+

A

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

24
Q

excess HCl to Cu^2+

A

CuCl4^2-

25
Q

Cu2+ + I-

A

CuI + I2

26
Q

Cu+ + CuSO4

A

Cu2+ / Cu

27
Q

excess HCl to CoCl2.6H2O

A

CoCl4^2-

28
Q

NH3 added dropwise to [Cr(H2O)6]^3+

A

Cr(OH)3 (s)

29
Q

excess NH3 to Cr^2+

A

[Cr(NH3)6]^3+

30
Q

excess NaOH to Cr(OH)3 (s)

A

[Cr(OH)6]^3+

31
Q

Cr^3+ with hot alkaline H2O2

A

CrO4^2-

32
Q

NaOH dropwise to [Mn(H2O)6]^2+

A

Mn(OH)2 (s)

33
Q

NaOH dropwise to [Mn(H2O)6]^2+

A

Mn(OH)2 (s)

34
Q

NaOH dropwise to [Fe(H2O)6]^2+

A

Fe(OH)2 (s)

35
Q

NaOH dropwise to [Fe(H2O)6]^3+

A

Fe(OH)3 (s)

36
Q

VO2^2+

A

yellow

37
Q

VO2+

A

blue

38
Q

V3+

A

green

39
Q

V2+

A

violet