Tests for practicals Flashcards
carbonate
add dilute acid = effervescence, carbon dioxide produced
chloride
acidify with dilute nitric acid, then add aqueous silver nitrate = white ppt.
bromide
acidify with dilute nitric acid, then add aqueous silver nitrate = cream ppt
nitrate
add aqueous sodium hydroxide then aluminium foil; warm carefully = ammonia produced
sulfate
acidify, then add aqueous barium nitrate = white ppt.
ammonium effect of aqueous sodium hydroxide
ammonia produced on warming
ammonium effect of aqueous ammonia
–
calcium effect of aqueous sodium hydroxide
white ppt., insoluble in excess
calcium effect of aqueous ammonia
no ppt., or very slight white ppt.
copper effect of aqueous sodium hydroxide
light blue ppt., insoluble in excess
copper effect of aqueous ammonia
light blue ppt., soluble in excess, giving a dark blue solution
iron (II) effect of aqueous sodium hydroxide
green ppt., insoluble in excess
iron (II) effect of aqueous ammonia
green ppt., insoluble in excess
iron (III) effect of aqueous sodium hydroxide
red-brown ppt., insoluble in excess
iron (III) effect of aqueous ammonia
red-brown ppt., insoluble in excess
zinc effect of aqueous sodium hydroxide
white ppt., soluble in excess giving a colourless solution
zinc effect of aqueous ammonia
white ppt., soluble in excess, giving a colourless solution
ammonia gas
turns damp, red litmus paper blue
carbon dioxide gas
turns limewater milky
chlorine gas
bleaches damp litmus paper
hydrogen gas
pops’ with a lighted splint
oxygen gas
relights a glowing splint
lithium flame
red
sodium flame
yellow
