Content code
c1708
Slug (identifier)
solubility-of-various-ionic-compounds
Parent content
Solubility Product Constant (Ksp)
Grades
Secondary V
Topic
Chemistry
Content
Contenu
Corps

Below is an exhaustive list of the possible solubility in water at 25 °C for various ionic compounds.

Legend:
• indicates a compound that has little or no solubility in water at 25 °C
º indicates a compound soluble in water at 25 °C
- indicates two ions that do not form an ionic compound

Negative ions Positive ions
|NH_{4}^{+}| |Li^{+}| |Na^{+}| |K^{+}| |Mg^{2+}| |Ca^{2+}| |Ba^{2+}| |Al^{3+}| |Cu^{2+}|
|CH_{3}COO^{-}| ° ° ° ° ° ° ° ° °
|NO_{3}^{ -}| ° ° ° ° ° ° ° ° °
|Cl^{-}| ° ° ° ° ° ° ° ° °
|Br^{-}| ° ° ° ° ° ° ° ° °
|I^{-}| ° ° ° ° ° ° ° ° °
|SO_{4}^{ 2-}| ° ° ° ° ° • • ° °
|SO_{3}^{ 2-}| ° ° ° ° • • • - -
|S^{2-}| ° ° ° ° - - - - •
|CO_{3}^{ 2-}| ° • ° ° • • • - •
|OH^{-}| ° ° ° ° • • ° • •
|PO_{4}^{ 3-}| ° ° ° ° • • • • •
|CrO_{4}^{ 2-}| ° ° ° ° ° ° • - •
Negative ions Positive ions
|Fe^{2+}| |Fe^{3+}| |Ni^{2+}| |Zn^{2+}| |Hg^{2+}| |Ag^{+}| |Sn^{2+}| |Pb^{2+}|
|CH_{3}COO^{-}| ° ° ° ° ° • - °
|NO_{3}^{ -}| ° ° ° ° ° ° ° °
|Cl^{-}| ° ° ° ° ° • ° •
|Br^{-}| ° ° ° ° • • ° •
|I^{-}| ° - ° ° • • ° •
|SO_{4}^{ 2-}| ° ° ° ° - ° ° •
|SO_{3}^{ 2-}| • - - • - • - •
|S^{2-}| • • • • • • • •
|CO_{3}^{ 2-}| • - • • - • - •
|OH^{-}| • • • • • • • •
|PO_{4}^{ 3-}| • • • • • • - •
|CrO_{4}^{ 2-}| - • • • • • - •

The tables below can be summarized using the following rules:

1.

Sodium, potassium, and ammonium salts are soluble.

2.

Nitrates, and acetates are soluble.

3.

Silver and lead (II) salts are often insoluble.

4.

Chlorides, bromides, and iodides are often soluble.

5.

Carbonates, sulphides, and hydroxides are often insoluble.

6.

Sulphates are often soluble.
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