Summary:
- The solubility of a substance is the amount of that substance that is required to form a saturated solution in a given amount of solvent at a specified temperature.
- Solubility is often measured as the grams of solute per 100 g of solvent.
- For gases, the pressure must also be specified.
- The effect is difficult to predict and varies widely from one solute to another.
- Several substances – HCl, NH3, and SO2 – have solubile that decreases as temperature increases.