THE INTERMOLECULAR POTENTIALS FOR SOME SIMPLE NON-POLAR MOLECULES
Abstract
Experimental data on the crystal properties, second virial coefficients, and viscosity coefficients of Ne, A, Kr, Xe, CH4, N2, CO, CO2, and O2 were analyzed to provide parameter values for the exp-6 to intermolecular potential, phi(r) = EPSILON/(1-6/ALPHA) 6/ALPHA)E TO THE ALPHA(1-R/RSUB M) - (R SUB M/R TO THE 6TH, where epsilon is the depth of the potential energy minimum, r sub m is the position of the minimum, and alpha is a measure of the repulsion- energy steepnes. For spherical gas molecules, the crystal, second virial, and viscosity data, as well as other transport-property data were reproduced with fair accuracy from a single set of potential parameters. However, at least 2 different sets of potential parameters were required for gases whose molecules deviate appreciable from spherical symmetry. This result was believed to indicate the inadequacy af the assumptions of central intermolecular forces and elastic intermolecular collisions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 06, 1953
- Accession Number
- AD0023060
Entities
People
- Edward A. Mason
- William E. Rice
Organizations
- University of Wisconsin–Madison