Chemical Physics Letters, Vol.708, 106-108, 2018
Standard absolute entropy, S-298(o), of salt hydrates from volumes and hydrate numbers and the thermodynamic difference rule
The calculation of standard absolute entropy values, S-298(o), of salt hydrates from their molecular volumes is reconsidered. The major effect on the entropy comes from the number of water molecules in the hydrated salt. Values of S-298(o) for 12 salt hydrates and 9 anhydrous salts not previously reported are presented.