Transition Metals Flashcards
0
Q
What is the •shape •formula •colour of the Hexaaqua copper (II) ion?
A
- Octahedral
- [Cu(H2O)6] 2+
- Blue
1
Q
Why do transition metals show a range of oxidation states?
A
Because the 3d and 4s energy levels are very close
2
Q
What is the •Name •Shape •Colour of the [Cu(NH3)4(H2O)2] 2+ ion?
A
- Tetraaminediaqua copper (II) ion
- Octahedral
- Deep Royal Blue
3
Q
What compound is formed when a small amount of dilute ammonia is added to Cu 2+?
A
Cu(OH)2 ppt
4
Q
What is the •shape •formula •colour of the Terachlorocuprate (II) ion?
A
- Tetrahedral
- [CuCl4]2-
- Yellow
5
Q
What colour is Fe2+ aqueous?
A
Pale Green
6
Q
What colour is Fe3+ aqueous?
A
Yellow
7
Q
What colour is Cr3+ aqueous?
A
Green
8
Q
What colour is Cu2+ aqueous?
A
Blue
9
Q
What colour is Fe2+ with NaOH?
A
Dirty green and red oxidised layer
10
Q
What colour is Fe3+ with NaOH?
A
Rust coloured
11
Q
What colour is Cr3+ with small amount of NaOH?
A
Grey-Green
12
Q
What colour is Cr3+ with NaOH in excess?
What is the formula?
A
Dark green solution
[Cr(OH)6] 3-
13
Q
What is the general equation for the precipitation of TM ions with NaOH?
A
M2+/M3+ + 2OH-/3OH- = M(OH)2/
M(OH)3
