Formula:
* Barium chloride: BaCl₂
* Water: H₂O
* Hydrate: BaCl₂ * xH₂O
Where 'x' represents the number of water molecules per formula unit of barium chloride.
Name:
* Barium chloride: This stays the same.
* Hydrate: This is added after the barium chloride name.
* Number of water molecules: This is indicated using a Greek prefix.
Examples:
* BaCl₂ * 2H₂O: Barium chloride dihydrate
* BaCl₂ * 3H₂O: Barium chloride trihydrate
Common Hydrates:
While there can be many different hydrates, some are more common:
* BaCl₂ * 2H₂O: Barium chloride dihydrate is a common hydrate you might encounter.
Important Note:
The number of water molecules in a hydrate can vary depending on the conditions. For instance, a hydrate might lose water molecules if exposed to dry air. This process is called efflorescence.
