Why does solubility increase with temperature

Question

I DONT UNDERSTAND !!!

Answer 1

Imagine a solvent like water made of tiny dots, molecules. Heat is basically the vibration of molecules. Solutes (things that dissolve) like salt dissolve by spreading its molecules through the solvent until you can't see it anymore. The faster the dots of the solvent (water) vibrate, the faster the solute (salt) is broken apart because the solvent (water) touches the solute (salt) more.

Answer 2

Increased temperature usually increases the solubility of solids in liquids. To understand why, we need to return to the Second Law of Thermodynamics. Increased temperature means a greater average velocity for the particles. This allows them to move from one position to another more easily. The greater freedom of movement allows the system to change its state more easily, and in keeping with the Second Law, it changes to the most probable state available, that is, the most dispersed state of which it is capable. Solids are condensed systems, so the dissolving of a solid usually leads to increased dispersal of the system. Therefore, although there are exceptions, an increase in temperature generally leads to an increase in a solid’s solubility.