General Chemistry at Penn State: Links

Rule	Exceptions
SOLUBLE ammonium (NH₄⁺) alkali metal (Li⁺, Na⁺, K⁺, Rb⁺, Cs⁺)	none
SOLUBLE nitrates (NO₃^-) acetates (CH₃COO^-) perchlorates (ClO₄^-) chlorides (Cl^-) bromides (Br^-) iodides (I^-) sulfates(SO₄^2-)	halides (Cl^-, Br^-, I^-) of Ag(I), Hg(II), Pb(II) sulfates of Ca(II), Sr(II), Ba(II), Pb(II), Hg(II)
INSOLUBLE sulfides (S^2-) carbonates (CO₃^2-) phosphates (PO₄³^-) hydroxides (HO^-)	ammonium salts (see above) alkali metal salts (see above) CaS, SrS, BaS Ca(OH)₂, Sr(OH)₂, Ba(OH)₂

Last updated 01/12/07