Sources of thermodynamic data and estimation methods

There are extensive tables of thermodynamic data which give standard enthalpies and free energies of formation and entropies in the standard 

Thermodynamic property values can also be estimated for many classes of compound in the gaseous state with a precision approaching that of experimental measurement. Various methods are outlined in ref. 9, but the best currently available is almost certainly that due to Benson. This is a group contribution method applicable to and Cp at 

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