Oxides Acidic Basic
Non - Metals Metals
(except CO, NO, H2O) (except ZnO, Al2O3, PbO)
Amphoteric
ZnO, Al2O3, PbO
Neutral
CO, NO, H2O
Nitrates Chlorides Sulphates Carbonates Oxides/Hydroxides
Soluble Salts
Insoluble Salts
all all others all others Sodium, Potassium, Ammonium Sodium, Potassium, Ammonium
Lead, Silver Lead, Barium, Calcium all others all others
Add
Add
Nitrate
NaOH
Al powder (warm)
Carbonate
HCl
-
Chloride Iodide Sulphate
HNO3
Silver NO3-
HNO3
Lead (II) NO3
HNO3
3
Barium NO
Observations NH4 produced Strong smell Turns red litmus blue CO2 produced White ppt in limewater White ppt
-
Yellow ppt White ppt
Gas
Test
Result
NH3
Red litmus in gas
Litmus turns blue
CO2
Bubble gas through limewater
Limewater turns milky
Cl2
Blue litmus in gas
Blue litmus bleached
H2
Lighted wooden splint near gas
Gas burns with 'pop' sound
O2
Glowing wooden splint near gas Drop of potassium dichromate(VI) solution on filter paper Place filter paper near gas
Splint relighted
SO2
Acidified orange dichromate(VI) turns green