AQA CHEM5 Transition metal colours

Word document table presentation of the colours of the products of reactions of Fe(III), Fe(II), Cr, Co, Cu & Al reactions with hydroxide ions, carbonate ions, ammonia and chloride ions. Equations for reactions are also shown.

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  • Created by: Sophie
  • Created on: 23-04-14 20:01

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Page 1

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OH- OH-


Equation [Al(H2O)6]3+ + 3OH- Equation [Cr(H2O)6]3++ 3OH-
Al(H2O)3(OH)3 + 3H2O Cr(H2O)3(OH)3 + 3H2O

Excess Excess
OH- OH-

Equation Al(H2O)3(OH)3 + 3OH- Equation Cr(H2O)3(OH)3 + 3OH-
[Al(OH)6]3- + 3H2O [Cr(OH)6]3- + 3H2O

NH3 NH3


Equation [Al(H2O)6]3++ 3NH3 Equation [Cr(H2O)6]3++ 3OH-
Al(H2O)3(OH)3 + 2H2O+ 3NH4+ Cr(H2O)3(OH)3 + 2H2O+ 3NH4+


Excess…

Page 2

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OH- O
H
Equation [Co(H2O)6]2++ 2OH- E [Cu(H2O)6]2++ 2OH-
Co(H2O)4(OH)2 + 2H2O q Cu(H2O)4(OH)2 + 2H2O
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Excess E
OH- x
c
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s
s

O
H
Equation E
q
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NH3 N
H

Equation Co(H2O)6]2++ 2OH- E [Cu(H2O)6]2++ 2OH-…

Page 3

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Excess E
NH3 x
c
e
s
s

N
H
Equation Co(H2O)4(OH)2 + 6NH3 E Cu(H2O)4(OH)2 +4NH3
[Co(NH3)6]2+ + 4H2O + 2OH- q [Cu(NH3)4(H2O)2]2+ + 2H2O + 2O
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CO 32- C
O

2
3
-

Equation [Co(H2O)6]2++ CO32- E…

Page 4

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Equation [Co(H2O)6]2++ 4Cl- Equation [Cu(H2O)6]2++ 4Cl-
[CoCl4]2- + 6H2O [CuCl4]2- + 6H2O




OH- O
H
Equation [Fe(H2O)6]2++ 2OH- E [Fe(H2O)6]3++ 3OH-
Fe(H2O)4(OH)2 + 2H2O q Co(H2O)3(OH)3 + 3H2O
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n

Excess E
OH- x
c
e
s
s

O
H
Equation E
q
u
a
t…

Page 5

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NH3 N
H

Equation [Fe(H2O)6]2++2OH- E [Fe(H2O)6]3++ 3OH
Fe(H2O)4(OH)4 + 2H2O+ 4NH4+ q Fe(H2O)3(OH)3 + 2H2O+ 3NH4
u
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Excess E
NH3 x
c
e
s
s

N
H
Equation E
q
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CO 32- C
O

2
3
-

Equation…

Page 6

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Cl- C
l
-


Equation Equation

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