2. Thermodynamic data presentation

The last three columns give, respectively, the standard enthalpy of formation (Δ _f H°), the standard entropy (S°) and the standard heat capacity $\left(c_p^{\text{o}}\right)$ of the compound under consideration at 25 ˚C.

The standard enthalpy of formation (Δ _f H°) of a compound with the general formula: C _α H _β N _γ...