What is the role of hydration in converting solid sodium acetate to sodium acetate trihydrate?

Hydration plays a crucial role in converting solid sodium acetate to sodium acetate trihydrate by allowing water molecules to bond with the sodium acetate crystals, forming a hydrated compound with three water molecules for every molecule of sodium acetate. This process is essential for the formation of sodium acetate trihydrate, which has different properties compared to the anhydrous form of sodium acetate.