Solubility Rules Flashcards
Sodium
Always soluble
Potassium
Always soluble
Lithium
Always soluble
Rubidium
Always soluble
Cesium
Always soluble
Ammonium
Always soluble
Alkali metals (general rule)
All soluble
Nitrates
NO3^-
Generally soluble
Chlorates and Perchlorates
ClO3^-
ClO4^-
Generally soluble
Bicarbonates
HCO3^-
Generally soluble
Acetates
CH3COO^- or C2H3O2^-
Generally soluble
Chlorides
Cl^- Generally soluble EXCEPT with: Pb^+2 Hg2^+2 Ag^+
Bromides
Br^- Generally soluble EXCEPT with: Pb^+2 Hg2^+2 Ag^+
Iodides
I^- Generally soluble EXCEPT with: Pb^+2 Hg2^+2 Ag^+
Neutral halides (general rule)
Generally soluble EXCEPT with:
Pb^+2
Hg2^+2
Ag^+
Sulfates
SO4^-2 Generally soluble EXCEPT with: Pb^+2 Hg2^+2 Ag^+ Ca^+2 Sr^+2 Ba^+2
Silver
Generally insoluble EXCEPT with: NO3^- ClO3^- ClO4^- CH3COO^-
Hydroxide
Generally insoluble except with:
Group I and Ba^+2
Group II (slightly soluble)
Think strong bases.
NH4+
Transition metals (and silver) hydroxides
Always insoluble
Carbonates
CO3^-2
Insoluble EXCEPT with:
Alkali metals and NH4^+
Phosphates
PO4^-3
Insoluble EXCEPT with:
Alkali metals and NH4^+
Sulfites
SO3^-2
Insoluble EXCEPT with:
Alkali metals and NH4^+
Chromates
CrO4^-2
Insoluble EXCEPT with:
Alkali metals and NH4^+
Sulfides
S^-2 Insoluble EXCEPT with: Alkali metals NH4^+ Ba^+2