Osmotic Coefficients and Activity Coefficients of Nonaqueous Electrolyte Solutions. Part 3. Tetraalkylammonium Bromides in Ethanol and 2-Propanol

摘要

Vapor pressure lowering by the addition of tetraethylammonium bromide (0.04 to 2.3 m), tetrapropylammonium bromide (0.04-2.7 m), therabutylammonium bromide (0.05-2.5 m), bispiperidinium bromide (0.04-0.7 m) to ethanol and tetrapropylammonium bromide (0.04-1.3 m) and terabutylammonium bromide (0.03-1.9 m) to 2-propanol was measured at 25 deg C with high precision. The experimental data of the corresponding osmotic coefficients are compared to those obtained by the use of Pitzer equations and chemical model calculations. Mean activity coefficients are derived from the osmotic coefficients.