The Diffusion Coefficient of Cupric Sulfate from 0.0 to 0.35 Molar at 25°C.

Abstract

1. The 25°C. isotherm for the system lithium chloride-dioxane-water has been presented. The system shows immiscibility for mixtures of high dioxane content.2. A new solvate, LiCl • H20 • (CMD/L, has been prepared and identified.3. A method of preparing anhydrous lithium chloride from the double solvate has been described.

Interferometric Study of Forced Convection Mass Transfer Boundary Layers in Laminar Channel Flow

“…These functions are further discussed in Appendix I. properties 0 and t+ (Eversole et al, 1942, Fritz et al, 1958, corresponding to the bulk electrolyte concentration Cb = 0.1 M Cuso 4 were employed in the evaluation of eq. 26, which should be a good approximation because concentration changes for short times are small.…”

“…Over the range of concentrations of interest, the variation in physical properties should be accounted for. Between 0 and 0.1 M CuS04 the electrolyte diffusion coefficient D shows a 40% variation (Eversole et al, 1942), and the cation transference number t+ exhibits a 10% variation (Fritz et al, 1958). There is also a possible ±10% uncertainty in the value of the electrolyte diffusion coefficient at a given concentration.…”

Diffusion Coefficients of Cuprous and Cupric Ions in Electrolytes with High Concentrations of Bromide Ions

“…The cuprous ion is thermodynamically unstable and disproportionates to Cu 0 and Cu 2+ in most aqueous electrolytes, thus making the cuprous systems more difficult to study. However, the addition of high concentrations of halide ions and the absence of oxygen stabilize the copper­(I) oxidation state. − The diffusion coefficient of Cu 2+ in sulfate electrolytes has been widely studied. − However, relatively few papers have been published on diffusion in the copper chloride electrolyte, ,− and much of that work is only of the cupric ,− chloride species and less of the cuprous , chloride species. In addition, to the best of our knowledge, the cuprous/cupric bromide system has not been examined.…”

Digital simulations to solve electrochemical processes involving a diffusion coefficient varying linearly with the concentration

“…Prior papers for theory [4][5][6][7][8][9][10][11][12][13] and experiments [14][15][16][17][18][19][20] on concentration-dependent diffusion coefficient in electrochemistry have been published. In general, the diffusion coefficient may be a function of concentration of the diffusing species, or a function of the positional coordinates [16].…”

“…In general, the diffusion coefficient may be a function of concentration of the diffusing species, or a function of the positional coordinates [16]. For instance, the diffusion coefficient depends on concentration when metals and non-metals diffuse into a metals [15], salts diffuse in solution [14], or with the diffusion of linear polymers [7,17]. Most of experiments concerning the intercalation process show that it obeys a diffusion control with a diffusion coefficient depending on the concentration [13].…”