Abstract
AbstractDiffusion coefficients of three dyes at low concentrations in a range of liquids of different viscosities have been measured by a capillary method, and the validity of various empirical equations for predicting diffusion coefficients has been assessed. The inverse relationship between diffusion coefficient and viscosity was found to apply only in mobile liquids, the product Dη being greater in viscous liquids. For a given viscosity, the difference between predicted and experimental values was greatest for hydrogen‐bonded liquids. Comparison with other results suggests that the diffusivity varies inversely as some power of the molar volume of the solute, the exponent varying from about 0.7 for mobile liquids, through 1.1 to 1.4 for viscous liquids, to a literature value of 1.7 for solid rubber.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
