Here's why:
* Solubility refers to the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature and pressure. It's a fixed property of the solute and solvent.
* Stirring helps to bring fresh solvent into contact with the solute, increasing the rate at which the solute dissolves. It also helps to distribute the dissolved solute throughout the solvent, preventing the solution from becoming saturated (reaching its maximum solubility) near the solute.
Think of it like this: imagine you're trying to dissolve a sugar cube in a glass of water. Stirring will make the sugar dissolve faster, but it won't change how much sugar can ultimately dissolve in the water at that temperature.
Other factors that affect solubility:
* Temperature: Solubility usually increases with temperature.
* Pressure: Pressure mainly affects the solubility of gases.
* Nature of solute and solvent: Some substances dissolve more readily in certain solvents.
