Did this video help you?
Solubility Rules (Edexcel IGCSE Chemistry: Double Science)
Revision Note
Solubility rules
- Ionic compounds are generally soluble in water compared to covalent substances, but there are exceptions
- A knowledge of the solubility of ionic compounds helps us to determine the most appropriate method for the preparation of salts
- The solubility of common ionic compounds is shown below:
Solubility of the common salts
Salts | Soluble | Insoluble |
Sodium, potassium and ammonium | All | None |
Nitrates | All | None |
Chlorides | Most are soluble | Silver and lead(II) |
Sulfates | Most are soluble | Barium, calcium and lead(II) |
Carbonates | Carbonates of sodium, potassium and ammonium | Most are insoluble |
Hydroxides |
Hydroxides of sodium potassium and ammonium (calcium hydroxide is sparingly soluble) |
Most are insoluble |
- Note that calcium hydroxide is slightly soluble in water
Examiner Tip
Calcium hydroxide solution is more commonly know as limewater and is used to test for carbon dioxide.
You've read 0 of your 10 free revision notes
Unlock more, it's free!
Did this page help you?