Transition Metals Flashcards Preview

Chemistry CH5 > Transition Metals > Flashcards

Flashcards in Transition Metals Deck (14)
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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