1. All common salts of alkali metals and ammonium ion are soluble
2. Acetates and nitrates are soluble.
3. Halides are soluble except for Ag, Hg (I) and Pb.
4. Sulfates are soluble except Ba, Sr, Pb, Ca, Ag and Hg(I).
5. Except for those in rule 1, carbonates, hydroxides, oxides, sulfides, chromates and phosphates are insoluble.