Testing For Positive Ions Flashcards
0
Q
What’s colour precipitate does Fe3+ form?
A
Brown
1
Q
How do you begin a precipitate test?
A
Add sodium hydroxide solution to your unknown solution, if a white precipitate forms add sodium hydroxide in excess.
If the precipitate dissolves you have Al3+ ions.
If not you must flame test
2
Q
What colour precipitate does Fe2+ form?
A
Green
3
Q
What colour precipitate does Cu3+ form?
A
Blue
4
Q
What colour flame does Li+ produce?
A
Crimson
5
Q
Na+?
A
Yellow
6
Q
K+?
A
Lilac
7
Q
Ca2+?
A
Brick red
8
Q
Ba2+
A
Green
