Diffusion coefficients for the liquid system acetone-cyclohexane at 298.15 K

Abstract

Table II. pAfgp of the Rare-Earth 8-Quinolinolates rare earth P*sp rare earth P-^sp Sc 34.52 ± 0.11 Tb 32.09 ± 0.23 Y 32.64 ± 0.18 Dy 32.38 ± 0.40 La 28.06 ± 0.09 Ho 31.89 ± 0.32 Pr 29.59 ± 0.45 Er 32.50 ± 0.36 Nd 30.50 ± 0.62 Tm 33.03 ± 0.85 Sm 30.80 ± 0.65 Yb 32.60 ± 1.12 Eu 31.39 ±0.33 Lu 33.46 ± 0.60 Gd 31.38 ± 0.45The fact that the solubility of the rare-earth 8-qulnollnates is so low, ~10"9 M, means that saturated solutions of only the pure rare-earth 8-quinolinate and pure water are approaching infinite dilution. This means that the activity product and the solubility product are essentially the same value. These values are given in Table II.The molar solubilities were calculated from the solubility products and are given in Figure 1. This curve Is characteristic of other rare-earth solubility curves given In the chemical literature. A "gadolinium break" Is present, and the yttrium solubility coincides with the heavy-rare-earth solubility. Both features are typical of similar rare-earth curves.

Quaternary Diffusion Coefficients in Liquids from Microfluidics and Raman Microspectroscopy: Cyclohexane + Toluene + Acetone + Methanol

“…This behavior agrees only in parts with the observations in the binary subsystems: For acetone + toluene, significant interactions were observed in both the quaternary system and the binary subsystem . For acetone + cyclohexane, negligible interactions were observed in the quaternary system despite significant interaction in the binary subsystem . For cyclohexane + toluene, interactions were observed in the quaternary system despite negligible interaction in the binary subsystem .…”

Local Composition Based Maxwell–Stefan Diffusivity Model for Binary Liquid Systems

“…Nine systems listed in Table were selected to test the predictive model of eq in this work. Diffusivities of five among the nine systems were measured experimentally in the present work, using the methods presented in sections and , while data for the other four systems were gathered from literature. − In our experiment, mutual diffusivities across a wide concentration range were measured, and diffusivities at infinite dilution were estimated by extrapolation from the experimental data. Experimental results of five systems are listed in Table .…”

Prediction of mutual diffusion coefficients in binary liquid systems with one self-associating component from viscosity data and intra-diffusion coefficients at infinite dilution

“…Only one set of mutual diffusion data is available for cyclohexane-acetone from Tasić et al (1981) at 25 0 C. The uncertainty of measurements was not given. To ascertain the accuracy, mutual diffusion coefficients of this system were also measured using the Taylor dispersion method.…”

“…The two sets of mutual diffusion coefficient data for methanol-water at 25 0 C in literature were found to agree well with each other, thus confirming the accuracy of these data. In contrast there is only one set of mutual diffusion data available for cyclohexane-acetone from Tasić et al (1981) at 25 0 C. To ascertain the accuracy, mutual diffusion coefficients for cyclohexane-acetone were measured for this work using Taylor dispersion. Table 4 lists the measured mutual diffusion coefficients for the cyclohexane-acetone system at 25 0 C and the intra-diffusion coefficients at the same temperature.…”