Soluble and Insoluble Ions

Rule and Exception

Soluble NO₃^-

N/A

NH₄⁺

N/A

Group 1a Metals

N/A

C₂H₃O₂^-

N/A

Soluble Cl^-

Ag⁺, Hg₂²⁺, Pb²⁺

Br^-, I^-

Ag⁺, Hg₂²⁺, Hg²⁺, Pb²⁺

Soluble SO₄^2-

Ag⁺, Hg₂²⁺, Pb²⁺, Ca²⁺, Sr²⁺, Ba²⁺

S^2-

NH₄⁺, Group 1a Metals

Insoluble CO₃^2-

NH₄⁺, Group 1a Metals

Insoluble CrO₄^2-

NH₄⁺, Group 1a Metals

Insoluble PO₄^3-

NH₄⁺, Group 1a Metals

OH^-

NH₄⁺, Group 1a Metals, Sr²⁺, Ba²⁺, Ca²⁺