English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

The rough hard‐sphere (RHS) theory for transport properties has substantially improved understanding of diffusion, viscosity, and thermal conductivity. At present, however, quantitative predictions for polyatomic species are hampered by uncertainties in assigning the hard‐sphere diameter and the roughness factor, and by lack of molecular dynamics calculations. Because the qualitative features of the theory have proven correct for a variety of chemical systems, methods have been proposed for using rough hard‐sphere theory even when the exact parameters needed to apply the theory are unknown. One such approach is examined for tracer diffusion in alkane solvents for solutes ranging in size from hydrogen to hexadecane. Useful relations are shown which are simple, yet entirely consistent with hard‐sphere theory. The approach circumvents the difficulties in assigning roughness factor, diameter, and molecular dynamics results.

Hard-sphere theory for correlation of tracer diffusion of gases and liquids in alkanes