Diffusion Coefficients of Chromium Chloride in Aqueous Solutions at 298.15 K and 303.15 K

Abstract

Mutual diffusion coefficients (interdiffusion coefficients) have been measured of chromium(III) chloride in water at 298.15 K and 303.15 K at concentrations between 0.005 mol‚dm-3 and 0.05 mol‚dm-3 using a conductometric cell. The experimental mutual diffusion coefficients are discussed on the basis of the Onsager-Fuoss model. The equivalent conductance at an infinitesimal concentration of the chromium-(III) ion in these solutions at 303.15 K has been estimated using these results.

Interactions of copper (II) chloride with sucrose, glucose, and fructose in aqueous solutions

“…Good reproducibility was observed, as seen by the small standard deviations of the mean, S Dav . Previous papers [10][11][12][13][14][15] reporting data obtained with our conductivity cell have shown that the error limits of our results should be close to the imprecision, therefore giving an experimental uncertainty 1-3%.…”

“…The open-ended capillary cell employed, which has previously been used to obtain mutual diffusion coefficients for a wide variety of electrolytes [8,9], has been described in great detail in previous papers [10][11][12][13][14][15]. Basically, this consists of two vertical capillaries, each closed at one end by a platinum electrode, and positioned one above the other with the open ends separated by a distance of about 14 mm.…”

Effect of Cobalt and Chromium Ions on the Chlorhexidine Digluconate as Seen by Intermolecular Diffusion

“…The D 11 values are considerably larger than the D 22 values, and, in the case of CrCl 3 , they are higher than the binary diffusion coefficient of this salt measured previously by the same technique [31,32].…”

“…Tracer diffusion coefficients of CoCl 2 and CrCl 3 and the mixture of them increase significantly in artificial saliva and in artificial saliva with NaF pH = 7.0, when compared with those obtained in water. The deviations between the tracer diffusion coefficient values (D 0 1 ) in these media and the limiting diffusion coefficients of these salts in water (D 0 ) [31,32], at the same temperature, are positive (∆D 0 /D 0 = 44%, 62%, and 95%, for CoCl 2 and CrCl 3 , and the mixture of them, respectively). The increase in these D 0 values when compared with the D 0 value in water indicates the presence of salting-out effects.…”

Diffusion Coefficients of Copper Chloride in Aqueous Solutions at 298.15 K and 310.15 K

“…The experimental technique used was the conductometric one by using an open-ended capillary cell. [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] The results thus obtained were analyzed with the help of the Onsager-Fuoss equations [25][26][27][28] by considering that copper(II) species may be present either as under-hydrolyzed forms or as complexes. 29,30 These studies are complemented by conductance measurements, having also in mind that they can contribute to the understanding of the diffusion of this electrolyte in solution.…”