US EPA

9088849 

Journal Article 

Properties of Electrolytic Solutions. XLIV. Conductance of Some Long Chain Salts in Ethylene Chloride, Pyridine and Nitrobenzene at 25°1 

Kraus, CA; Pickering, HL 

1949 

Yes 

Journal of the American Chemical Society
ISSN: 0002-7863
EISSN: 1520-5126 

71 

10 

3288-3293 

English 

10.1021/ja01178a005 

1. The conductances of seven long chain salts have been measured in ethylene chloride; five have been measured in nitrobenzene and one has been measured in pyridine. Cation conductances have been evaluated from the results of these measurements. 2. Several other salts have been measured in one or more of these solvents. Ion conductances have been derived from these measurements. 3. The conductance of tetrabutylammonium triphenylborofluoride in nitrobenzene has been remeasured. The slope of the Λ0−√C plot corresponds to the theoretical value within the limit of experimental error. 4. Plots are shown for the reciprocals of ion conductance viscosity products for the five symmetrical quaternary ammonium ions from tetramethyl- to tetraamyl, inclusive, and for octadecyltributyl- and dioctadecyldibutylammonium ions in ethylene chloride, nitrobenzene and pyridine. In ethylene chloride the equivalent resistance is a linear function of the number of carbon atoms from the tetraethyl- to the tetra-amylammonium ions, inclusive. Thereafter, resistance deviates slightly toward lower resistances as the number of carbon atoms increases. The resistance curve in nitrobenzene parallels that in ethylene chloride for smaller ions but deviates widely for large ions. The resistance curve for pyridine parallels that for ethylene chloride for large ions but deviates widely for small ions. © 1949, American Chemical Society. All rights reserved.