Transition Metal Complex Colours And Topic 4 Reactions Flashcards
1
Q
[Co(H2O)6]2+
A
Pink solution
2
Q
[CoCl4]2-
A
Blue solution
3
Q
[Co(OH)2(H2O)4]
A
Blue precipitate
4
Q
[Co(NH3)6]3+
A
Orange solution
5
Q
CoCO3
A
White precipitate
6
Q
[Cu(H2O)6]2+
A
Pale blue solution
7
Q
[Cu(OH)2(H2O)4]
A
Pale blue precipitate
8
Q
[Cu(NH)4(H2O)2]2+
A
Royal blue solution
9
Q
[CuCl4]2-
A
Yellow solution
10
Q
CuCO3
A
Blue precipitate
11
Q
CuI
A
White precipitate
12
Q
[Fe(H2O)6]2+
A
Pale green solution
13
Q
[Fe(OH)2(H2O)4]
A
Dirty green precipitate
14
Q
[Fe(OH)3(H2O)3]
A
Rusty brown precipitate
15
Q
[Fe(H2O)6]3+
A
Yellow solution
16
Q
[Fe(SCN)(H2O)5]2+
A
Blood red solution
17
Q
[FeCl4]-
A
Yellow/ orange solution
18
Q
[FeCl4]2-
A
Pale green solution
19
Q
FeCO3
A
White precipitate
20
Q
[Cr(H2O)6]2+
A
Blue solution
21
Q
[Cr(H2O)6]3+
A
Green solution
22
Q
[Cr(OH)3(H2O)3]
A
Green precipitate
23
Q
[Cr(NH3)6]3+
A
Green solution
24
Q
[Cr(OH)6]3-
A
Green solution
25
CrO42- (oxidised Cr(OH)63- in ALKALINE
Yellow solution
26
Cr2O72- (Cr6+ in ACID)
Orange solution
27
Reaction of Cl2 with water
Cl2 + H2O —> HClO + HCl
28
Reaction of Cl2 with cold, diluted NaOH
Cl2 + 2NaOH —> NaClO + NaCl + H2O
NaClO is bleach
29
Reaction of Cl2 with hot, dilute NaOH
3Cl2 + 6NaOH —> NaClO3 + 5NaCl + 3H2O
30
Reaction of NaCl with warm concentrated sulphuric acid
NaCl + H2SO4 —> HCl + NaHSO4
31
Products when NaBr reacts with warm concentrated H2SO4
Br2, NaHSO4, SO2, HBr
Most important consideration is the reduction of S to +4 in SO2
32
Products when NaI reacts with warm concentrated H2SO4
I2, S, H2S
(Most important consideration is the reduction of S from +6 to -2 in H2S and 0 in S)
33
