Colours and reactions of transition metals

?
  • Created by: Khadidya
  • Created on: 17-03-19 17:51

Reactions with copper

The reaction of hexaaquacopper with hydroxide ions/ ammonia 

Colour: blue precipitate 

Reactions of hexaaquacopper(II) ions with excess ammonia solution

Colour: Dark blue solution 

The reaction of hexaaquacopper(II) ions with carbonate ions

Colour: Turqouise colour 

[Cu(H2O)6]2+- Blue 

1 of 9

Reactions with copper

A ligand exchange reaction involving chloride ions

Colour: Yellow solution

The reaction of hexaaquacopper(II) ions with iodide ions

Colour: white precipitate 

2 of 9

Reactions of colbalt

The reaction of hexaaquacobalt(II) ions with hydroxide ions

Colour: Blue precipitate 

Reactions of hexaaquacobalt(II) ions with ammonia solution

Colour: Blue precipitate 

Reaction of hexaaquacolbalt (II) with excess ammonia 

Colour: Orange solution

[Co(H2O)6]2+ - Pink 

3 of 9

Reactions of colbalt

The reaction of hexaaquacobalt(II) ions with carbonate ions

Colour: lilac solid 

A ligand exchange reaction involving chloride ions

Colour: Purple solution

4 of 9

Reactions with iron

Reaction of Fe(II) with hydroxide ions/ ammonia 

Colour: Green precipitate 

Reaction of Fe (III) with hydroxide ions/ ammonia 

Colour change: Green solution to brown precipitate 

Reaction of Fe (III) with carbonate ions 

Colour: Green solution to brown precipitate 

5 of 9

Reaction of Iron

Testing for iron(III) ions with thiocyanate ions

A blood red colour is prodcued, indicating the presence of Fe (III) ions 

6 of 9

Reactions of Chromium (III) ions

Reactions of hexaaquachromium(III) ions with hydroxide ions

Colour: a green precpitate is produced. 

Reactions of hexaaquachromium(III) ions with excess hydroxide ions

Colour: A dark green solution is produced 

Reactions of hexaaquachromium(III) ions with ammonia solution

Colour: Green precipitate 

7 of 9

Reactions of Chromium (III) ions

Reactions of hexaaquachromium(III) ions with excess ammonia solution

Colour: green solution 

Reactions of hexaaquachromium(III) ions with carbonate ions

Colour: Green precipitate 

The oxidation of chromium(III) to chromium(VI)

Colour: Yellow solution 

8 of 9

Reactions of Chromium (III) ions

The chromate(VI)-dichromate(VI) equilibrium

9 of 9

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Reactions resources »