Thermodynamic properties of acrylonitrile, 1-aminopropane, 2- aminopropane, and 2-methyl-2-aminopropane.
Low-temperature calorimetric quantities were determined for acrylonitrile, 1-aminopropane, 2-aminopropane, and 2-methyl-2- aminopropane from 12 deg k to near their respective normal boiling temperatures. Values of molar heat capacity at saturation pressure of the condensed phases, transition and melting temperatures, and enthalpies of transition and fusion were measured by adiabatic calorimetry. From these data the thermodynamic quantities - [g8(t) - h deg (0)]/t, [h8(t) - h deg (0)]/t, [h8(t) - h deg (0)], s8, and c8 were evaluated for the solid and liquid states. For acrylonitrile a revised vibrational assignment was made from raman and infrared wavenumbers reported in the literature, and a table of thermodynamic functions for the ideal gas state from 0 deg to 1,000 deg k was prepared. Values of the enthalpy, Gibbs energy, and logarithm of equilibrium constant of formation for acrylonitrile also were computed for the range 0 deg to 1,000 deg k.