Accession Number : ADD095077

Title :   Ideal Gas Thermodynamic Properties of Six Chloroethanes,

Corporate Author : NATIONAL STANDARD REFERENCE DATA SYSTEM

Personal Author(s) : Chao, J ; Rodgers, A S ; Wilhoit, R C ; Zwolinski, B J

Report Date : Jan 1974

Pagination or Media Count : 25

Abstract : The thermodynamic properties were evaluated by statistical thermodynamic methods based on a rigid-rotor harmonic-oscillator model. The internal rotation contributions to thermodynamic functions were calculated by using a partition function formed by summation of internal rotation energy levels. The internal rotation barrier heights employed for generation of the energy levels for each of the above six chloroethanes are: 3.69, 3.54, 5.08, 10.38, 14.43, and 14.7, respectively. The calculated heat capacities and entropies are compared with available experimental data. The derived values are compared with those reported in the other major compilations.

Descriptors :   *THERMODYNAMIC PROPERTIES, *GAS DYNAMICS, *CHLOROETHANES, MOLECULAR ENERGY LEVELS, MOLECULAR ROTATION, STATISTICAL PROCESSES, VALUE, SPECIFIC HEAT, SYMMETRY, TORSION

Subject Categories : Organic Chemistry
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE