salts qualitative analysis - test for cations w (NaOH) Flashcards

12717769921	aluminium Al3+ in aqueous NaOH	white ppt aluminium hydroxide	0
12717795566	aluminium Al3+ in excess NaOH	white ppt dissolves to form colourless solution sodium aluminate	1
12717815077	calcium Ca2+ in aqueous NaOH	white ppt Ca(OH)2	2
12717853105	calcium Ca2+ in excess NaOH	insoluble white ppt calcium hydroxide	3
12717862304	lead (ii) Pb2+ in aqueous NaOH	white ppt lead (ii) hydroxide	4
12717878288	lead (ii) Pb2+ in excess NaOH	white ppt dissolves to form colourless solution sodium plumbate	5
12717901070	zinc Zn2+ in aqueous NaOH	white ppt zinc hydroxide	6
12717912043	zinc Zn2+ in excess NaOH	white ppt dissolves to form colourless solution sodium zincate	7
12717923008	copper Cu2+ in aqueous NaOH	blue ppt copper (ii) hydroxide	8
12717931450	copper Cu2+ in excess NaOH	blue ppt copper (ii) hydroxide	9
12717992191	iron (ii) Fe2+ in aqueous NaOH	dirty green ppt iron (ii) hydroxide	10
12718104702	iron (ii) Fe2+ in excess NaOH	dirty green ppt iron (ii) hydroxide	11
12718133836	iron (iii) Fe3+ in aqueous NaOH	reddish brown ppt iron (iii) hydroxide	12
12718149625	iron (iii) Fe3+ in excess NaOH	reddish brown ppt iron (iii) hydroxide	13
12718160478	ammonium NH4+ in aqueous NaOH	no ppt	14
12718162342	ammonium NH4+ in excess NaOH	ammonia gas produced on warming, turns moist red litmus blue ammonium hydroxide	15
12718183775	potassium K+ in aqueous NaOH	no ppt	16
12718187371	potassium K+ in excess NaOH	no gas given off	17
12718197879	sodium Na+ in aqueous NaOH	no ppt	18
12718201288	sodium Na+ in excess NaOH	no gas given off	19
12718203686	white ppt cations	calcium aluminium lead zinc	20
12718211704	coloured ppt cations	iron (ii) iron (iii) copper (ii)	21
12718219595	no ppt cations	sodium potassium ammonium	22