All compounds containing alkali metal group cations (group #1) and the ammonium ion are
soluble
All compounds containing NO^-3, ClO4^-1, ClO^-3, and C2H3O2^-1 anions are
soluble
All chlorides, bromides, and iodides are soluble except those containing
Ag^+, Pb^+2, or Hg^+2
All sulfates are soluble except those containing
Hg^+2, Pb^+2, Sr^+2, Ca^+2, or Ba^+2
All hydroxides are insoluble except
the compounds of alkali metals, Ca^+2, Sr^+2, and Ba^+2
All compounds containing PO4^-3, S^-2, CO3^-2, and SO3^-2 ions are insoluble except
those that also contain alkali metals or NH4^+1