Question

As a hydrate is heated, and the water of hydration is driven off, the compound may undergo one or more of the following changes?

Answer 1

As a hydrate is heated, the waters of hydration are driven off and the compound may undergo changes in color, crystal lattice structure, and mass.

Step-by-step explanation:

As a hydrate is heated, the waters of hydration are driven off and the compound may undergo one or more of the following changes:

1. The color of the compound may change. For example, the hydrated form of a compound may be of a different color than the anhydrous form, which has no water in its structure.
2. The crystal lattice structure of the compound may change. Hydrates typically have water molecules incorporated within their formula unit, and when the water is removed, the crystal lattice may rearrange itself.
3. The mass of the compound may decrease. Nearly half of the mass of a hydrate is composed of water molecules within the crystal. When the water is driven off, the mass of the compound will decrease.