Solubility Rules

Question 1

Soluble ions (with no exceptions)

Answer 1

NH4+, group 1 cations (Li+, Na+, K+, Rb+, Cs+), C2H3O2-, HCO3-, NO3-, ClO3-

Question 2

Soluble Ions (with any exceptions)

Answer 2

Cl-, Br- I-, F-, SO4 2-

Question 3

Insoluble exception(s) to Cl-, Br-, and I-

Answer 3

In compounds containing Ag+, Hg2 2+, and Pb 2+

Question 4

Insoluble exception(s) to F- compounds

Answer 4

Compounds with group 2 metal cations, Pb 2+, or Fe 3+

Question 5

Insoluble exception(s) to SO4 2-

Answer 5

Compounds with Ag+, Ba 2+, Ca 2+, Hg2 2+, Pb 2+, or Sr 2+

Question 6

All insoluble ions (with any exceptions)

Answer 6

CO3 2-, CrO4 2-, PO4 3-, S 2-, OH-

Question 7

Soluble exception(s) to CO3 2-, CrO4 2-, PO4 3-, S 2-

Answer 7

Compounds with group 1 cations or NH4+

Question 8

Soluble exception(s) to OH-

Answer 8

Compounds with group 1 cations or Ba 2+