Solubility Rules Flashcards
Sodium Ions (Na +)
Always Soluble
Potassium Ions (K +)
Always Soluble
Ammonium Salts (NH4 +)
Always Soluble
Chloride Ions (Cl -)
Soluble
Exceptions: Insoluble in compound with Ag+, Hg2+, Pb2+
Iodide Ion (I -)
Soluble
Exceptions: insoluble in compound with Ag+, Hg2+, Pb2+
Nitrates (NO3 -)
Always Soluble
Perchlorate (ClO4 -)
Always Soluble
Ethanoate (aka Acetate) (CH3COO -)
Always Soluble
Sulfate (SO4 2-)
Soluble
Exceptions: Insoluble in compound with Ca2+, Ba2+, Sr2+, Ag+, Hg2+, Pb2+
Carbonate (CO3 2-)
Insoluble
Exceptions: Soluble in compound with IA+ and NH4 +
Phosphate (PO4 3-)
Insoluble
Soluble in compound with IA+ and NH4 +
Hydroxides (OH -)
Insoluble
Soluble in compound with IA+, NH4+, Ca2+, Ba2+, Sr2+
Sulfide (S 2-)
Insoluble
Soluble in compound with IA+, IIA2+, and NH4+
What does group IA metals contain?
Li, Na, K, Rb, Cs, Fr
What does Group IIA metals contain?
Be, Mg, Ca, Sr, Ba, Ra
Hydrogen Carbonate (HCO3 -)
Always Soluble
Chlorate (ClO3 -)
Always Soluble
Chromate (CrO4 2-)
Insoluble
Exceptions: soluble in compound with IA+, NH4+, Ca2+, Mg2+
All IA+ ions
Always Soluble
All halides (halogens) eg: Cl-, Br-, I-
Soluble
Exceptions: Insoluble in compound with Ag+, Hg2+, Pb2+
Silver Ions (Ag +)
Insoluble
Exceptions: Soluble in compound with NO3- or CH3COO- (nitrate or acetate)
Fluorides (F -)
Insoluble
Exceptions: soluble in compound with IA+ or NH4+