Solubility Rules

NO₃^-, ClO₄^-, Li⁺, Na⁺, K⁺, NH₄⁺

always soluble, no exceptions

Cl^-, Br^-, I^-

soluble except with Ag⁺, Hg₂²⁺, Pb²⁺

SO₄^2-

soluble except with Sr²⁺, Ba²⁺, Pb²⁺, Ag⁺, Ca²⁺

OH^-, S^2-

insoluble except with Li⁺, Na⁺, K⁺, NH₄⁺, Ca²⁺, Sr²⁺, Ba²⁺

CO₃^2-, PO₄^3-

insoluble except with Li⁺, Na⁺, K⁺, NH₄⁺