Science with Tara

In this lesson, we will learn the general rules of solubility for common salts. This is an important topic in O-Level and IGCSE Chemistry.

At O levels, students are required to describe the general rules of solubility for common salts to include nitrates, chlorides (including silver and lead), sulfates (including barium, calcium and lead), carbonates, hydroxides, Group I cations and ammonium salts.

Solubility Rules

Chlorides

All chlorides are soluble except lead(II) chloride and silver chloride.

Carbonates

All carbonates are insoluble except Group I metal carbonates and ammonium carbonates.

Sulfates

All sulfates are soluble except calcium sulfate, lead(II) sulfate, barium sulfate.

Nitrates

All nitrates are soluble.

Group I and Ammonium salts

All Group I metal salts and ammonium salts are soluble.

Practice Exercise

Try the online exercise with to test your understanding and master your learning. Answers are provided in the video. 😊

Determine the solubility of each of this salt:

1. Sodium carbonate
2. Zinc chloride
3. Ammonium carbonate
4. Copper(II) nitrate
5. Barium chloride
6. Silver chloride
7. Aluminium carbonate
8. Iron(III) sulfate
9. Ammonium nitrate
10. Calcium sulfate
11. Lithium carbonate
12. Lead(II) sulfate
13. Potassium carbonate
14. Ammonium sulfate

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