Cation Aqueous Tests Flashcards
1
Q
Aluminium and NaOH
A
White precipitate
Dissolves in excess NaOH
2
Q
Calcium and NaOH
A
White precipitate
Insoluble in NaOH
3
Q
How do you distinguish between calcium and magnesium
A
Flame test - calcium forms brick red flame whereas magnesium has no flame
4
Q
Magnesium and NaOH
A
White precipitate
Insoluble in NaOH
5
Q
Copper 2 and NaOH
A
Pale blue precipitate
6
Q
Iron 2 and NaOH
A
Green precipitate
7
Q
Iron 3 and NaOH
A
Orangey brown precipitate
8
Q
Ammonium and NaOH
A
No precipitate
Damped red litmus paper, it turns blue
