QA Table Flashcards
Aluminum test
Sodium hydroxide:
Ammonium:
(Al3+)
-Sodium hydroxide:White ppt, soluble in excess to give colourless solution
-Ammonium: White ppt, insoluble in excess
Carbon Dioxide test
(CO2)
Bubble gas in limewater, gives white ppt(calcium carbonate)
Ammonia test
(NH3)
Pungent gas, turns moist red litmus paper blue
Nitrate test
(NO-3)
Add sodium hydroxide + warm gently
NH3 produced
Ammonium test in
Ammonium:
Sodium hydroxide:
(NH+4)
-Ammonium: Nil
-Sodium Hydroxide: Ammonia Gas produced on warming
Iron(II) test
Ammonium:
Sodium hydroxide:
(Fe2+)
-BOTH: green ppt insoluble in excess
Sulfur Dioxide test
(SO2)
Turns aqueous acidified potassium maganate (VII) from purple to colourless
Chloride test
(Cl-)
Add dilute nitric acid + silver nitrate
Gives white ppt(silver Chloride)
Zinc test
Ammonium:
Sodium Hydroxide:
(Zn2+)
BOTH:White ppt, soluble in excess, gives colourless solution.
Carbonate test
(CO2- 3)
Add dilute acid
Effervescence
Carbon dioxide produced
Chlorine test
(Cl2)
Bleaches damp litmus paper
Iron(III) test
Sodium hydroxide:
Ammonium:
(Fe3+)
BOTH:Reddish-Brown ppt
Insoluble in excess
Hydroxide
OH-
Oxygen
(O2)
Relights GLOWING splint
Copper(II) test
Sodium hydroxide:
Ammonium:
(Cu2+)
-Sodium hydroxide:light blue ppt, insoluble in excess
-Ammonium:light blue ppt, soluble in excess, gives dark blue solution
