Solubility ChartAnionSoluble CationsInsoluble*CationsNitrate (NO3-)Acetate (CH3COO-)All common ionsNo common ionsChloride(Cl-)Bromide(Br-)Iodide(I-)Most ionsAg+,Pb2+,Hg+Sulfate(SO42-)Most ionsCa2+, Ba2+,Sr2+,Ag+, Pb2+, Hg+Carbonate(CO32-)Sulfite (SO32-)Phosphate (PO43-)NH4+, Li+, Na+, K+Most ionsHydroxide(OH-)NH4+, Ba2+,Li+, Na+, K+Most ionsSulfide(S2-)NH4+, Li+, Na+, K+Most ionsOxide(O2-)Ca2+, Ba2+, Li+, Na+, K+hydrolyseMostions* Often, “insoluble” actually means “sparingly soluble” (dissolves to a small degree) rather than “completely unable to dissolve”.All compounds of the ammonium ion (NH4+)andalkali metals (group I)cationsaresoluble.All nitrates and acetatesaresoluble.Allchlorides, bromides and iodides aresolubleEXCEPTthose of silver, lead and mercury(I).All sulfates aresolubleEXCEPTthose of calcium, barium, strontium, silver, lead andmercury(I).All carbonates, sulfites and phosphates areinsolubleEXCEPTthose of ammonium and alkali metals (group I) cations.All hydroxides areinsolubleEXCEPTthose of ammonium, barium and alkali metals(group I) cations.All sulfides areinsolubleEXCEPTthose of ammonium and alkali metals(group I) cations.All oxidesareinsolubleEXCEPTthose of calcium, barium and alkali metal (group I) cations. These soluble ones actually hydrolyse (react with the water to form hydroxides).