George E. Moore

Vapor Pressure and Other Thermodynamic Data for n‐Hexadecane and n‐Dodecylcyclohexane near Room Temperature

Vapor pressure measurements, by the Knudsen effusion method, have been obtained for n‐hexadecane and n‐dodecylcyclohexane within the temperature range 299−324°K. From these the following vapor pressure equations have been derived: C16H34;  log10p (in mm)=11.2822–4212/T,C18H36;  log10p (in mm)=12.4190–4880/T. Thence, values at 298.16°K have been calculated for (a) the changes in enthalpy and free energy in the standard‐state vaporization of these hydrocarbons and (b) the corresponding enthalpies and free energies of formation in the gaseous state.