5.6 Solubility
The solubility of a substance is the maximum amount of solute that can be dissolved in an amount of solvent at a certain temperature. Therefore, it describes the concentration of a saturated solution. Solubility changes with temperature.
Substance | 10 °C | 25 °C | 50 °C |
---|---|---|---|
LiCl | 73.8 | 84.5 | 94.1 |
NaCl | 32.7 | 36 | 36.7 |
KCl | 30.9 | 35.5 | 43 |
NaOH | 63.9 | 100 | 170.3 |
Plot
Temperature affects solubility. If solubility increases with increasing temperature, the dissolution process is endothermic. If solubility decreases with increasing temperature, the dissolution process is exothermic.