Errata: Thermodynamic Functions of the Chloro- and Bromomethanes, Formaldehyde and Phosgene

Abstract

By use of the harmonic oscillator‐rigid rotator approximation the free energy function (F0—E00/T), and the heat content (H0—E00) of the chloro‐ and bromomethanes, formaldehyde and phosgene have been calculated from spectroscopic and electron diffraction data over temperature ranges where the aforesaid approximations are valid. The heat capacity Cp for the bromomethanes, formaldehyde and phosgene have been calculated over the same temperature range as the free energy function and the heat content. The entropies of the ten molecules in the hypothetical ideal gas state at 298.1°K have been calculated. With the values of (F0—E00/T) for β‐graphite, chlorine, oxygen and hydrogen tabulated by other investigators with our values of this function for the chloromethanes, formaldehyde and phosgene and the heat data of Bichowsky and Rossini we have calculated the free energy of formation of these molecules.