Transition With Hydroxides Flashcards
(11 cards)
1
Q
[Cu(H2O)6]➡️ [Cu(H2O)4(OH)2
A
Pale blue solution➡️ blue ppt
2
Q
[Fe(H2O)6]➡️ [Fe(H2O)4(OH)2]
A
Pale green solution➡️ green ppt
3
Q
[Co(H2O)6]➡️ [Co(H2O)4(OH)2]
A
Pale pink solution➡️ blue ppt (turns pink on standing)
4
Q
[Fe(H20)6]➡️ [Fe(H2O)3(OH)3]
A
Yellow brown solution➡️ brown ppt
5
Q
[Cr(H2O)6]➡️ [Cr(H2O)3(OH)3]
A
Green solution➡️ grey green ppt
6
Q
True or false?? Cu +2 and Co +2 hydroxides both dissolve in excess ammonia.
A
True
7
Q
[Co(H2O)4(OH)2]➡️ [Co(NH3)6]
A
Blue ppt➡️ brown solution
Solution darkens on satening, oxidised by air
8
Q
[Cu(H2O)4(OH)2]➡️ [Cu(NH3)4(H2O)2]
A
Blue ppt➡️ deep blue solution
9
Q
True or false? Cr +3 dissolves in excess NH3.
A
True
10
Q
[Cr(H2O)3(OH)3]➡️ [Cr(NH3)6]
A
Grey-green ppt➡️ purple solution
11
Q
[Co(H2O)3(OH)3]➡️ [Co(NH3)6]
A
Blue (or pink) ppt➡️ yellow-brown solution
