Final answer:
The compound NaCH₃COO . 3H₂O is named sodium acetate trihydrate. It indicates that there are three water molecules bound to each sodium acetate in the crystalline structure.
Step-by-step explanation:
Name the Hydrate NaCH₃COO . 3H₂O
The hydrate NaCH₃COO . 3H₂O is named sodium acetate trihydrate. This compound consists of sodium acetate (NaCH₃COO) and three water molecules (3H₂O) associated with it. In the naming of hydrates, the prefix 'tri-' refers to the three water molecules, and 'hydrate' indicates that these water molecules are part of the crystal structure of the compound. The systematic name clearly tells us the number of water molecules present in the compound.
Step-by-Step Explanation
Identify the anhydrous salt: sodium acetate (NaCH₃COO).
Count the number of water molecules attached: three (3H₂O).
Use the appropriate prefix for the number three, which is 'tri-'.
Combine the name of the salt with the prefix and 'hydrate' to denote the presence of water molecules.