Additive single atom values for thermodynamics IV: Formula volume, enthalpy, absolute entropy and heat capacity for ionic solids - Hydrate and anhydrate data

Abstract

Atom Sums are optimized additive values for the chemical elements which may be used to predict thermochemical values of inorganic solids. Since they are based on the elements of the Periodic Table they are a complete set of parameters, subject only to the availability of reference thermochemical data. In the present publication, optimized data is presented for ambient formula unit volumes, enthalpies, entropies and heat capacities for both inorganic hydrates and anhydrates. These data complement previously published Atom Sum parameters for formation reaction entropies and for formation reaction Gibbs energies as well as complementing earlier data for undifferentiated inorganic solids.

Keywords

• Hydrates
• Anhydrates
• Formula volumes
• Enthalpies
• Entropies
• Heat capacities