Determination of Ionic Partial Molar Volumes of Bolaform Electrolytes by Means of Sedimentation Potential Measurements

Abstract
Sedimentation potentials (SP) and electrical conductivities have been measured in aqueous solutions of three kinds of bolaform electrolytes, [R3N–(CH2)n–NR3]Br2 where R stands for ethyl group and n is equal to 4, 6, and 10. Using the SP and conductivity data the partial molar volumes of the bolaform salts were divided into cationic and anionic parts. Two ionic sites of the bolaform electrolytes behave independently.