Solubility Rules Flashcards
Group 1 Ions (Li+, Na+, etc…)
ALWAYS SOLUBLE
Ammonium (NH4+)
ALWAYS SOLUBLE
Nitrates (NO3-)
ALWAYS SOLUBLE
Acetates (C2H3O2- or CH2COO-)
AgC2H3O2 is moderately soluble, everything else is ALWAYS SOLUBLE
Chlorates
ALWAYS SOLUBLE
Halides (EXCEPT F-)
Soluble EXCEPT Ag+ Pb2+ Hg2+
PbCl2 is slightly soluble in cold water and moderately soluble in warm water
F-
Soluble EXCEPT Pb2+ Mg2+ Ca2+ Sr2+ Ba2+
Sulfates
Soluble EXCEPT Ba2+ Pb2+ Ca2+ Sr2+
Carbonates
Phosphates
Insoluble EXCEPT Group 1 ions (Alkali) and NH4+
Chromates
Insoluble EXCEPT Group 1 ions (Alkali) Sr2+ Ba2+ B3+
Ca2+ somewhat soluble
Sulfides
Insoluble EXCEPT Group 1 ions (Alkali) NH4+
Ca2+ Ba2+ Sr2+ Somewhat / Slightly soluble
Hydrogen Carbonate
ALWAYS SOLUBLE
Hydroxides (OH-)
INSOLUBLE EXCEPT Group 1 ions (Alkali) Ca2+ Ba2+ Sr2+ or NH4+