Negative Ions (Anions) |
Positive Ions (Cations) |
Compounds |
essentially all |
alkali ions (Li+, Na+, K+, Rb+, Cs+, Fr+) |
soluble |
essentially all |
hydrogen ion, H+ |
soluble |
essentially all |
ammonium ion, NH4+ |
soluble |
nitrate, NO3- |
essentially all |
soluble |
acetate, CH3COO- |
essentially all |
soluble |
chloride, Cl-
bromide, Br-
iodide, I- |
Ag+, Pb2+, Hg22+, Cu1+ |
low solubility |
all others |
soluble |
sulfate, SO42- |
Ca2+, Sr2+, Ba2+, Pb2+, Ra2+, Ag+, Hg2+ |
low solubility |
all others |
soluble |
sulfide, S2- |
alkali ions, H+, NH4+, Be2+, Mg2+, Ca2+, Sr2+, Ba2+, Ra2+ |
soluble |
all others |
low solubility |
hydroxide, OH1- |
alkali ions, H+, NH4+, Sr2+, Ba2+, Ra2+ |
soluble |
all others |
low solubility |
phosphate, PO43-
carbonate, CO32-
sulfite, SO32- |
alkali ions, H+, NH42+ |
soluble |
all others |
low solubility |
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