1 Inorganic salt hydrates as PCMs. Salt hydrates comprise an important group of PCMs. An inorganic salt hydrate (hydrated salt or hydrate) is an ionic compound in which a number of water molecules are attracted by the ions and therefore enclosed within its crystal lattice. The general formula of a hydrated salt is MxNy
Furthermore, how do you find the formula of a hydrated salt?
Steps to Finding the Formula of a Hydrate
- Determine the mass of the water that has left the compound.
- Convert the mass of water to moles.
- Convert the mass of anhydrate that is left over to moles.
- Find the water-to-anhydrate mole ratio.
- Use the mole ratio to write the formula.
Beside above, what is the empirical formula of hydrated salt? These compounds are called hydrates. Copper(II) sulfate pentahydrate is an example of such a hydrate. Its formula is CuSO4 5H2O. The five in front of the formula for water tells us there are 5 water molecules per formula unit of CuSO4 (or 5 moles of water per mole of CuSO4).
Then, what is hydrated salt?
A hydrated salt is a crystalline salt molecule that is loosely attached to a certain number of water molecules. Salt is created when an acid’s anion and a base’s cation are combined to produce an acid-base molecule. In a hydrated salt, the water molecules are incorporated into the crystalline structure of the salt.
Is NaCl a hydrated salt?
There is no hydrate of table salt. The formula for sodium chloride is NaCl. Thus, when the salt is dried it simply pure sodium chloride. This is the lowest energy state of the molecule – there is no driving force to form a stable hydrate.