practical Flashcards
1
Q
Observation for ligand replacement for hexaaquacopper ions
A
With ammonia solution - Blue precipitate forms. Excess ammonia dark blue solution forms
With concentrated HCl - blue solution changes to yellow
2
Q
Recall the aqueous complexes of the following
Cr3+
A
Green
3
Q
Cr2O7 2-
A
Orange
4
Q
CrO4 2-
A
Yellow
5
Q
Mn 2+
A
Pink
6
Q
Fe 2+
A
Green
7
Q
Fe 3+
A
Orage
8
Q
Co 2+
A
Pink
9
Q
Ni2+
A
Green
10
Q
Cu 2+
A
Blue
11
Q
V 2+
A
Violet
12
Q
V3+
A
Green
13
Q
VO2+
A
Bue
14
Q
VO2 +
A
Yellow
15
Q
For the following give the colour of the complex and if its soluble in excess sodium hydroxide or excess ammonia
Cr3+
A
Green-blue precipitate soluble in excess sodium hydroxide
