Vapor pressures, osmotic and activity coefficients of electrolytes in protic solvents at different temperatures. Part 1. Lithium bromide in methanol

Abstract

Precise vapor pressure data for LiBr solns. in MeOH are given for temps. ranging from 298.15-333.15 K. The molality range is from 0.0411-6.8675 mol-kg-1. Osmotic coeffs. were calcd. by taking into account the 2nd virial coeff. of MeOH. The parameters of the Pitzer-Mayorga model, the Archer extension of the Pitzer-Mayorga model, the mole-fraction-based thermodn. model of Clegg-Pitzer, and the recently developed MSA-NRTL model are evaluated, along with the corresponding std. deviation. These equations were used to calc. activity coeffs. of LiBr in MeOH solns.