Solubility rules for ionic compounds in water

compounds containing Li⁺ ions

generally soluble, no exceptions

compounds containing Na⁺ ions

generally soluble, no exceptions

compounds containing K⁺ ions

generally soluble, no exceptions

compounds containing NH₄⁺ ions

generally soluble, no exceptions

compounds containing NO₃^- ions

generally soluble, no exceptions

compounds containing C₂H₃O₂^- ions

generally soluble, no exceptions

compounds containing Cl^- ions

generally soluble, insoluble when paired with Ag⁺, Hg₂²⁺, or Pb²⁺

compounds containing Br^- ions

generally soluble, insoluble when paired with Ag⁺, Hg₂²⁺, or Pb²⁺

compounds containing I^- ions

generally soluble, insoluble when paired with Ag⁺, Hg₂²⁺, or Pb²⁺

compounds containing SO₄^2- ions

generally soluble, insoluble when paired with Ca²⁺, Sr²⁺, Ag⁺, Ba²⁺, or Pb²⁺

compounds containing OH^- ions

generally insoluble

• soluble resulting compounds when paired with Li⁺, Na⁺, K⁺, and NH₄⁺

• slightly soluble resulting compounds when paired with Ca²⁺, Sr²⁺, or Ba²⁺

compounds containing S^2- ions

generally insoluble, soluble resulting compounds when paired with Li⁺, Na⁺, K⁺, NH₄⁺, Ca²⁺, Sr²⁺, or Ba²⁺

compounds containing CO₃^2-

generally insoluble, soluble resulting compounds when paired with Li⁺, Na⁺, K⁺, or NH₄⁺

compounds containing PO₄^3-

generally insoluble, soluble resulting compounds when paired with Li⁺, Na⁺, K⁺, or NH₄⁺