test for anions, cations, gas, flame Flashcards
(25 cards)
carbonate CO3
add diliute hcl
effervescene, co2 produced
chloride
acidify with nitric acid, add silver nitrate
white ppt
bromide Br-
acidify with nitric acid, add silver nitrate
cream ppt
iodide
acidify with nitric acid, add silver nitrate
yellow ppt
nitrate NO3-
add NaOH, cover with aluminium foil, heat gently
ammonia produced
sulpate SO4
acidify, add barium nitrate
white ppt
sulphite so3-
add dilute HCl
warm gently
test for presence for sulphur dioxide
turns acidify potassium manganate purple to colourless
aluminium
add NaOH
- white ppt
- soluble in excess
add NH3
- white ppt
- insoluble in excess
ammonium NH4
add NaOH
- ammonia produced
- turns red litmus blue
calcium
add NaOH
- white ppt
- insoluble in excess
add NH3
- no ppt
- soluble in excess
chronium Cr
NaOH
- green ppt
- soluble in excess
NH3
- grey green ppt
- insoluble in excess
copper Cu
add NaOH
- light blue ppt
- insoluble in excess
add NH3
- light blue ppt
- soluble in excess
iron 2
NaOH, NH3
- green
- insoluble in excess
iron 3
NaOH, NH3
- red-brown
- insoluble in excess
zinc
NaOH, NH3
- white ppt
- soluble in excess
NH3
turns red litmis blue
carbon dioxide
turns limewater cloudy
cl2
bleaches damp litmus paper
sulfur dioxide
turns acidify potassium manganate purple to colourless
hydrogen
makes a pop sound in lighted splint
oxygen
relights a glowing splint
Lithum ion
red flame
sodium ion
yellow flame
potassium ion
lilac flame
