Activity Series
Li > K > Ba > Sr > Ca > Na > Mg > Al > Mn > Zn > Fe > Cd > Co > Ni > Sn > Pb > (H) > Cu > Ag > Hg > Au
Solubility Rules for Ionic Compounds
Compounds containing the following ions are generally soluble in water:
- Alkali metal ions and ammonium ion
- Acetate ion
- Nitrate ion
- Halide ions (X) (AgX, Hg2X2, and PbX2 are insoluble exceptions)
- Sulfate ion (SrSO4, BaSO4, and PbSO4, are insoluble exceptions)
Compounds containing the following ions are generally insoluble in water:
- Carbonate ion (see rule 1 exceptions, which are soluble)
- Chromate ion (see rule 1 exceptions, which are soluble)
- Phosphate ion (see rule 1 exceptions, which are soluble)
- Sulfide ion (CaS, SrS, BaS, and rule 1 exceptions are soluble)
- Hydroxide ion [Ca(OH)2, Sr(OH)2, Ba(OH)2, and rule 1 exceptions are soluble]
Last Updated: 06/11/2015
