* Definition: A saturated solution holds the maximum amount of solute that can dissolve at a given temperature and pressure. Any additional solute added will simply settle at the bottom.
* Equilibrium: Saturated solutions are in a state of equilibrium. This means the rate of dissolving is equal to the rate of crystallization. The solution is constantly trying to maintain this balance.
* Factors: To make a saturated solution become unsaturated, you need to change the conditions. Here are some ways:
* Increase Temperature: For most solids, increasing the temperature will increase the solubility of the solute. This allows the solution to hold more solute and become unsaturated.
* Decrease Temperature: For most solids, decreasing the temperature will decrease the solubility of the solute. This can cause some of the solute to precipitate out of solution, making it unsaturated.
* Remove Solvent: If you remove some of the solvent (like water), the concentration of the solute increases. This can make the solution saturated or even supersaturated if it exceeds the solubility limit.
* Add More Solvent: Adding more solvent will dilute the solution, lowering the concentration of the solute. This will make the solution unsaturated.
In summary: Saturated solutions will remain saturated unless the conditions are changed to shift the equilibrium.
