Some determinations of liquid‐phase diffusion coefficients by means of an improved diaphragm cell

The integral diffusion coefficients of acetone, acetic acid, benzoic acid, diethylamine and uranyl nitrate in water and in a number of organic solvents have been determined at 20°. The mutual diffusion coefficients of four partially miscible solvent-water pairs have also been determined, the solvents being aniline, ethyl acetate, furfuraldehyde and isobutanol. An improved diaphragm cell was used for these measurements, both compartments being agitated by electromagnetically driven stirrers. The existence of a critical stirring rate, different for each cell, below which the cell constant varied was demonstrated. An Appendix is included demonstrating how differential diffusion constants could be determined directly with a cell of this type.

[1]  I. E. Smith,et al.  Diffusion coefficients of ethanol in aqueous solutions , 2007 .

[2]  Edward G. Scheibel,et al.  Correspondence. Liquid Diffusivities. Viscosity of Gases. , 1954 .

[3]  D. Othmer,et al.  Correlating Diffusion Coefficient in Liquids , 1953 .

[4]  R. Stokes,et al.  Diffusion in binary liquid mixtures. Part 1.—Diffusion coefficients in the system ethanol + water at 25° , 1953 .

[5]  R. F. Hudson,et al.  Self-diffusion of Aliphatic Alcohols , 1952, Nature.

[6]  J. M. Nielsen,et al.  The Self-diffusion Coefficients of the Ions in Aqueous Sodium Chloride and Sodium Sulfate at 25° , 1952 .

[7]  R. Stokes.  Integral Diffusion Coefficients of Potassium Chloride Solutions for Calibration of Diaphragm Cells , 1951 .

[8]  R. Stokes.  The Diffusion Coefficients of Eight Uni-univalent Electrolytes in Aqueous Solution at 25° , 1950 .

[9]  R. Stokes.  An Improved Diaphragm-cell for Diffusion Studies, and Some Tests of the Method , 1950 .

[10]  H. S. Harned,et al.  The Differential Diffusion Coefficient of Potassium Chloride in Aqueous Solutions , 1949 .

[11]  A. Gordon.  THE DIAPHRAGM CELL METHOD OF MEASURING DIFFUSION , 1945, Annals of the New York Academy of Sciences.

[12]  G. Hartley,et al.  The Porous Diaphragm Method of Measuring Diffusion Velocity, and the Velocity of Diffusion of Potassium Chloride in Water , 1938 .

[13]  H. Lemonde.  Diffusion et viscosité dans les mélanges liquides binaires , 1938 .

[14]  A. Gordon.  The Diffusion Constant of an Electrolyte, and Its Relation to Concentration , 1937 .

[15]  W. Cathcart,et al.  Diffusion Coefficients in Alcohol—Water Mixtures , 1935 .

[16]  C. R. Dawson,et al.  The Diffusion of Potassium Chloride in Aqueous Solution , 1935 .

[17]  Colin Barnes,et al.  Diffusion Through a Membrane , 1934 .

[18]  J. Mcbain,et al.  DIFFUSION OF ELECTROLYTES, NON-ELECTROLYTES AND COLLOIDAL ELECTROLYTES , 1931 .

[19]  J. H. Arnold.  STUDIES IN DIFFUSION. II. A KINETIC THEORY OF DIFFUSION IN LIQUID SYSTEMS , 1930 .

[20]  M. L. Anson,et al.  A METHOD FOR THE DETERMINATION OF DIFFUSION CONSTANTS AND THE CALCULATION OF THE RADIUS AND WEIGHT OF THE HEMOGLOBIN MOLECULE , 1929, The Journal of general physiology.