Aq NaOH + Transition Metal Flashcards
1
Q
Cr 3+ - metal aqua ion
A
Violet solution
Cr(H20)6 3+
2
Q
Fe 2+ - metal aqua ion
A
Green solution
Fe (H2O)6 2+
3
Q
Fe 3+ - metal aqua ion
A
Yellow solution
Fe (H2O)6 3+
4
Q
Mn 2+ - metal aqua ion
A
Pale pink solution
Mn (H2O)6 2+
5
Q
Cu 2+ - metal aqua ion
A
Blue solution
Cu(H2O)6 2+
6
Q
Co 2+ - metal aqua ion
A
Pink solution
Co (H2O)6 2+
7
Q
Cr 3+ - with OH-
A
Green ppt
Cr(OH)3 (H2O)3
8
Q
Fe 2+ - with OH-
A
Green ppt
Fe (OH)2 (H2O)4
9
Q
Fe 3+ - with OH-
A
Brown ppt
Fe (OH)3 (H2O)3
10
Q
Mn 2+ - with OH-
A
Pale brown ppt
Mn (OH)2 (H2O)4
11
Q
Cu 2+ - with OH-
A
Blue ppt
Mn (OH)2 (H2O)4
12
Q
Co 2+ - with OH-
A
Blue ppt
Co (OH)2 (H2O)4
13
Q
Cr3+ - with excess OH-
A
Green solution
Cr (OH)6 3-
14
Q
Fe 2+ - with excess OH-
A
No change
Green ppt
15
Q
Fe 3+ - with excess OH-
A
No change
Brown ppt
