Solutions of Some Alkali Halides in the Pure Liquids and in Mixtures of N-Methylacetamide and Dimethylformamide

Abstract

Dielectric constants, densities, and viscosities of N‐methylacetamide, dimethylformamide, and of mixtures of these liquids have been determined at five temperatures. Conductances, densities, and viscosities of solutions of sodium and potassium bromides and potassium iodide in various mixtures of these solvents have been measured at ten‐degree intervals from 20° to 50°C. Variations in the dielectric constant of the solvent over the range 35–165 showed no influence on the degree of dissociation of these salts; they are essentially completely dissociated in all of the solvent mixtures studied. Differences in mobilities of the ions are explained in terms of various specific types of solute‐solvent interactions.

Two‐Dimensional Current Distribution Within a Packed‐Bed Electrochemical Flow Reactor

“…[21] can be used to determine the uppermost current which may be achieved for a system of known exchange current density, conductivity, and electrode geometry. [17] to generate the corresponding total current flowing to the electrode. [21] for a given applied potential may be substituted into Eq.…”

“…[2] and [8] which are subsequently employed are, respectively ,j:, [e-a,~--Ci e(1-a)nr [16] s ] p : ~ e-oar--e (x-~)"r RdR [17] 7i. [2] and [8] which are subsequently employed are, respectively ,j:, [e-a,~--Ci e(1-a)nr [16] s ] p : ~ e-oar--e (x-~)"r RdR [17] 7i.…”

“…where i*ro = [18] nFCrDr Equations [16] and [17] imply that o'JRdR --1 [19] Finally Eq. [9] will be used to determine the average volumetric reaction rate between reactor inlet and position e in accord with the integral 0 ,8d,8…”

“…[17]. The quantity o is a dimensionless distance and may also be interpreted as the dimensionless time period during which a fluid packet has been in contact with the packed bed.…”

Amides

“…13 CrCl 2 and TiCl 3 have been used as reducing agents in potentiometric titrations. 49 The following have been determined in this way:…”