Solubility rules Flashcards
Compounds that are soluble make…
aqueous solutions
Alkali metals
CATIONS: No exceptions! Always soluble and make aqueous solutions.
NH₄⁺
CATION: No exceptions! Always soluble and make aqueous solutions.
NO₃⁻
ANION: No exceptions! Always soluble and make aqueous solutions.
CH₃COO⁻
ANION: No exceptions! Always soluble and make aqueous solutions.
Cl⁻
ANION: Insoluble with Ag²⁺, Hg₂²⁺, Pb²⁺ and make solids. Otherwise makes aqueous solutions.
Br ⁻
ANION: Insoluble with Ag²⁺, Hg₂²⁺, Pb²⁺ and make solids. Otherwise makes aqueous solutions.
I ⁻
ANION: Insoluble with Ag²⁺, Hg₂²⁺, Pb²⁺ and make solids. Otherwise makes aqueous solutions.
SO₄²⁻
ANION: Insoluble with Ag²⁺, Hg₂²⁺, Pb²⁺, Sr²⁺, Ba²⁺, Ca²⁺, and make solids. Otherwise makes aqueous solutions.
Compounds that are insoluble make…
solids
S²⁻
ANION: soluble with NH₄⁺, alkali cations, Sr²⁺, Ba²⁺, Ca²⁺ and make aqueous solutions. Otherwise makes solids.
OH⁻
ANION: soluble with NH₄⁺, alkali cations, Sr²⁺, Ba²⁺, Ca²⁺ and make aqueous solutions. Otherwise makes solids.
CO₃²⁻
ANION: soluble with NH₄⁺ and alkali cations and make aqueous solutions. Otherwise makes solids.
PO₄³⁻
ANION: soluble with NH₄⁺ and alkali cations and make aqueous solutions. Otherwise makes solids.