I've come across two use cases of the word "hydration", presented to me as distinct topics:
- Solvation is the process of reorganizing solvent and solute molecules into solvation complexes and involves bond formation, hydrogen bonding, and van der Waals forces. Solvation of a solute by water is called hydration. And, the solute ion/molecule around which this hydration shell is formed is said to be hydrated.
- Water of crystallization are the molecules of water which remain trapped within the lattice of a substance. The salts containing water of crystallisation are said to be hydrated.
Is it safe to assume that the two instances of the word refer to the same phenomenon?