Chemistry › Section K · Solutions and colloids › Topic K.3
Solubility
There is a limit to how much of a substance any solvent can hold, and that limit shifts with temperature and, for gases, with pressure. Knowing how it shifts explains why fizzy drinks go flat, why warm rivers can suffocate fish, and how chemists purify solids by crystallising them.
In this topic
- How much can dissolve?
- Saturated, unsaturated and supersaturated
- Solids: the effect of temperature
- Worked example: crystals from cooling
- Gases: the effect of temperature
- Gases: Henry's law
- Worked example: carbon dioxide in a soft drink
- Worked example: oxygen for fish
- Liquids in liquids
- Common mistakes to avoid
- Key takeaways
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