Solubility Rules (Edexcel IGCSE Chemistry)
Revision Note
Written by: Stewart Hird
Reviewed by: Lucy Kirkham
Did this video help you?
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 Tips and Tricks
Calcium hydroxide solution is more commonly know as limewater and is used to test for carbon dioxide.
Last updated:
You've read 0 of your 5 free revision notes this week
Sign up now. It’s free!
Did this page help you?
