* Reversible Process: A reversible process can be undone. In the case of salt dissolving in water:
* Forward reaction: Salt (NaCl) dissolves in water (H2O) to form sodium ions (Na+) and chloride ions (Cl-).
* Reverse reaction: By evaporating the water, the ions can recombine to form solid salt again.
* Equilibrium: The dissolving process reaches a point of equilibrium where the rate of dissolving is equal to the rate of crystallization. This means that there is a constant back and forth between dissolved ions and solid salt.
In summary: While salt seems to disappear when dissolved in water, it is simply changing its physical state. The salt is still present in the solution, and it can be recovered by reversing the process.
