Here's why:
* Solubility and Temperature: Generally, the solubility of solids in liquids increases with increasing temperature. This is because higher temperatures provide more energy to the solvent molecules, allowing them to break apart the crystal lattice of the solid and dissolve more of it.
* Sodium Acetate Trihydrate: Sodium acetate trihydrate (NaC2H3O2 · 3H2O) is a solid that dissolves in water.
Therefore, if you were to add the same amount of sodium acetate trihydrate to both hot water and room temperature water, you would find that much more of the crystals would dissolve in the hot water.