Solubility Rules

Question 1

Soluble Compounds

Answer 1

Almost all Salts of (Na+) (K+) (NH4+)
Salts of Nitrate (NO3-), Chlorate (ClO3-), Perchlorate (ClO4-), and Acetate (CH3CO2-)

Question 2

Soluble Compounds and Exceptions #1

Answer 2

Almost all salts of (Cl-) (Br-) (I-) EXCEPT Halides of (Ag+) (Hg2 (2+)) (Pb(2+))

Question 3

Soluble Compounds and Exceptions #2

Answer 3

Salts containing (F-) EXCEPT
Fluorides of (Mg (2+)) (Ca (2+)) (Sr (2+))
(Ba (2+)) (Pb (2+))

Question 4

Soluble Compounds and Exceptions #3

Answer 4

Salts of sulfate (SO4 (2-)) EXCEPT
Sulfates of (Ca (2+)) (Sr (2+)) (Ba (2+))
(Pb (2+)) (Ag+)

Question 5

Insoluble Compounds and Exceptions #1

Answer 5

Most salts of carbonate (CO3 (2-)), phosphate (PO4 (3-)), oxalate (C2O4 (2-)), chromate (CrO4 (2-)), sulfide (S (2-)) EXCEPT
Salts of (Nh4+) and the alkali metal cations

Question 6

Insoluble Compounds and Exceptions #2

Answer 6

Most metal hydroxides and oxides EXCEPT
Alkali metal hydroxides and (Ba(OH)2) and (Sr(OH)2)