(apple green) not – seen in trial BaCO3 CaCO3 CuSO4 LiCl KCl NaCl FeCl3 Analysis of results Model results – Sample Test A Test B Test C Test D Test E Flame test Ag+/H+ Ba2+ H+ OH– NH3 yellow precipitate blue Example formed, blue precipitate, no change no change green/blue CuI2 precipitate dissolves in didn’t dissolve in excess NH3 ammonia white blue 1: copper precipitate blue precipitate, chloride formed, no change no change green/blue precipitate dissolves in CuCl2 dissolved in excess NH3 ammonia 2: potassium bubbles bubbles bubbles carbonate no change no change lilac formed formed formed K2CO3 yellow precipitate 3: potassium formed, no change no change no change no change lilac iodide KI didn’t dissolve in ammonia 4: copper white white blue blue no change green/blue sulfate precipitate precipitate precipitate precipitate,
(apple green) – not seen in trial BaCO3 CaCO3 CuSO4 LiCl KCl NaCl FeCl3 Analysis of results – Model results Sample Test A Ag+/H+ Test B Ba2+ Test C H+ Test D OH– Test E NH3 Flame test Example CuI2 yellow precipitate formed, didn’t dissolve in ammonia no change no change blue precipitate blue precipitate, dissolves in excess NH3 green/blue 1: copper chloride CuCl2 white precipitate formed, dissolved in ammonia no change no change blue precipitate blue precipitate, dissolves in excess NH3 green/blue 2: potassium carbonate K2CO3 bubbles formed bubbles formed bubbles formed no change no change lilac 3: potassium iodide KI yellow precipitate formed, didn’t dissolve in ammonia no change no change no change no change lilac 4: copper sulfate white precipitate white precipitate no change blue precipitate blue precipitate, green/blue
351862-pag-activity-chemistry-identification-of-species-suggestion-1.docx