Qualitative Analysis - Cations Flashcards
Iron (Fe3+) and sodium hydroxide
Reddish Brown precipitate insoluble in excess
Zinc (Zn2+) and sodium hydroxide
White precipitate soluble in excess to form a colourless solution
Ammonium (NH4+) and sodium hydroxide
No visible reaction
On warming, effervescent occurs, pungent colourless gas turns moist red litmus paper blue
Calcium (Ca2+) and ammonia
No visible reaction
Potassium （K+）and sodium hydroxide
No visible reaction
Zinc (Zn2+) and ammonia
White precipitate soluble in excess to form a colourless solution
Ammonium (NH4+) and ammonia
No visible reaction
Lead (Pb2+) and ammonia
White precipitate insoluble in excess
Potassium （K+）and ammonia
No visible reaction
Iron (Fe3+) and ammonia
Reddish brown precipitate insoluble in excess
Aluminium (Al3+) and sodium hydroxide
White precipitate soluble in excess to form a colourless solution
Calcium(Ca2+) and sodium hydroxide
White precipitate insoluble in excess
Copper (Cu2+) and ammonia
Light blue precipitate soluble in excess, to give a deep blue solution
Sodium (Na+) and sodium hydroxide (NaOH)
No visible reaction
Iron (Fe2+) and sodium hydroxide
Dirty green precipitate insoluble in excess
