Chem 112- Solubility rules and Polyatomic Ions
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14 Terms
CO3 2-
Carbonate
OH-
Hydroxide
NH4 +
Ammonium
NO3 -
Nitrate
PO4 3-
Phosphate
SO4 2-
Sulfate
Soluble or insoluble: Group 1 cations and NH4+
Always soluble
Soluble or insoluble: Nitrates (NO3-)
Always soluble
Soluble or insoluble: Perchlorates (ClO4-) and Acetates (CH3COO-)
Always soluble
Soluble or insoluble: Chlorides, bromides, iodides (Cl-, Br-, I-)
Soluble UNLESS Ag+, Hg2 2+, Pb2+ is present
Soluble or insoluble: Sulfates (SO42-)
Soluble UNLESS Sr2+, Hg2 2+, Pb2+, Ba2+ are present
Soluble or insoluble: Carbonates (CO32-)
Insoluble UNLESS Group 1 cations, NH4+, NO3-, ClO4- or CH3COO- present
Soluble or insoluble: Phosphates (PO43-)
Insoluble UNLESS Group 1 cations, NH4+, NO3-, ClO4- or CH3COO- present
Soluble or insoluble: Hydroxides (OH-)
Insoluble UNLESS Group 1 cations, NH4+, NO3-, ClO4- or CH3COO- present
Note 
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