Hydrate Compounds
Simple hydrates are ionic compounds which have a name based on an anhydrous compound. They are recognized by the presence of zH2O as a part of the formula. Note that the "·" is read "dot" and is placed above the line in the formula.
MnXy·zH2O
The format for the name of this kind of compound has the word hydrate with a Greek prefix to indicate the number of waters of hydration as part of the name:
| Anhydrous Compound | Hydrate |
| BaCl2 | BaCl2·2H2O |
| barium chloride | barium chloride dihydrate |
| CuSO4 | CuSO4·5H2O |
| copper(II) sulfate | copper(II) sulfate pentahydrate |
| cupric sulfate | cupric sulfate pentahydrate |
| Co(NO3)2 | Co(NO3)2·6H2O |
| cobalt(II) nitrate | cobalt(II) nitrate hexahydrate |
This Power Point Show has more examples of Hydrate compounds.