Vapor Pressures, Osmotic and Activity Coefficients of Electrolytes in Protic Solvents at Different Temperatures. 2. Lithium Bromide in Ethanol

Abstract

Precise vapor pressure data for LiBr solns. in ethanol are given for temps. ranging from 298.15 to 348.15 K. The molality range investigated is from 0.0705 to 3.4451 mol-kg-1. Osmotic coeffs. are calcd. by taking into account the second virial coeff. of ethanol. The parameters of the extended Pitzer ion-interaction model of Archer, the MSA-NRTL model, and the chem. model of Barthel are evaluated and discussed. The parameters of the extended Pitzer ion-interaction model of Archer are used to calc. the mean molal activity coeffs. Osmotic and activity coeffs. both decrease with increasing temp. in this temp. range.