Interpretation:
The naming of hydrates needs to be explained.
Concept introduction:
Generally hydrated compounds contain water in the form of H2O molecule.

Answer to Problem 176A
Hydrated compounds are named with a suffix of monohydrate (for 1 water molecule), dehydrate (two water molecule), trihydrate (three water molecule) etc.
Explanation of Solution
In ionic solids sometimes certain number of water molecules are present.
For example CuSO4.5H2O contains 5 water molecules. So it is a pentahydrate. It is named as copper sulfate pentahydrate.
Similarly, Na2CO3.10H2O is named as sodium carbonate decahydrate because it contains 10 water molecules.
Hydrate compounds are named with a suffix of hydrate.
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Chemistry: Matter and Change
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