Solubility Rules

Compounds that contain the following Exceptions ions are most SOLUBLE.

Li+1, Na+1, K+1, Rb+1, NH4+1 None

(Hint-these are Group IA ions plus)

NO3-1, C2H3O2

-1 None

Cl-1, Br-1, I-1 (Hint-Group VIIA ions) When combined with Ag+1, Hg+1, Pb+2 compound is not soluble

SO4-2 When combined with Sr+2, Ba+2,

Ca+2, Pb+2 compound not soluble(Hint-mostly Group IIA)

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Compounds containing the following Exceptionsions are mostly INSOLUBLE.

OH-1, S-2 When combined with Li+1, Na+1, K+1, Rb+1, NH4

+1 (Hint-Group IA)

When combined with Sr+2, Ba+2, Ca+2

soluble

CO3-2, PO4

-3 When combined with Li+1, Na+1, K+1, Rb+1, NH4

+1 (Group IA)