Tests For Cations - Sodium Hydroxide Flashcards
1
Q
Ammonium (NH4^+)
A
No visible reaction.
Ammonia gas is produced on warming.
2
Q
Calcium (Ca^2+)
A
White ppt formed.
White ppt insoluble in excess
3
Q
Potassium (K^+)
A
No visible reaction.
No ppt.
No gas.
4
Q
Sodium (Na^+)
A
No visible reaction.
No ppt.
No gas.
5
Q
Zinc (Zn^2+)
A
White ppt formed.
White ppt soluble in excess giving a colorless solution.
6
Q
Lead (II) (Pb^2+)
A
White ppt formed.
White ppt soluble in excess giving a colorless solution.
7
Q
Copper (II) (Cu^2+)
A
Light blue ppt formed.
Light blue ppt insoluble in excess.
8
Q
Iron (II) (Fe^2+)
A
Dirty green ppt formed.
Dirty green ppt insoluble in excess.
9
Q
Iron (III) (Fe^3+)
A
Reddish brown ppt formed.
Reddish brown ppt insoluble in excess.
