Abstract
The diffusion coefficient D has been measured for atoms diffusing through 12 liquid n-alkanes, n-pentane through n-hexadecane, at 20.0 °C. The dependence of D (/sec) on the viscosity η (P) was found to be D=(1.26±0.06)× where varies monotonically in these solvents from 0.235 cP (for n-) to 3.48 cP (for n-). The observation that D is proportional to η to a negative power of magnitude near (2/3) is in agreement with other work on several different solute-solvent systems. Some ramifications of this dependence are suggested.
- Received 18 September 1984
DOI:https://doi.org/10.1103/PhysRevA.31.980
©1985 American Physical Society