2- Propanol-water-lithium perchlorate system

The isothermal vapor-liquid equilibrium data at 75°, 50°, and 25°C for the 2-propanol-water-lithium perchlorate system are listed in Tables I and II. It can be seen from these tables that in the alcohol-rich region the vapor phase composition of 2-propanol increases with an increase in salt concentration. However, in a mixed solvent of 10 mol % alcohol the change of the vapor phase composition is small, and at a temperature of 50° and 25°C it even decreases a... 

Isothermal vapor-liquid equilibrium data at 75°, 50° and 25° C for the system of 2-propanol-water-lithium perchlorate were obtained by using a modified Othmer still. In the 2-propanol-rich region 2-propanol was salted out from the aqueous solution by addition of lithium perchlorate, but in the water-rich region 2-propanol was salted in. It is suggested from the experimental data that the simple electrostatic theory cannot account for the salt effect parameter of this system. 

The thermodynamic excess functions for the 2-propanol-water mixture and the effects of lithium chloride, lithium bromide, and calcium chloride on the phase equilibrium for this binary system have been studied in previous papers (2, 3). In this paper, the effects of lithium perchlorate on the vapor-liquid equilibrium at 75°, 50°, and 25°C for the 2-propanol-water system have been obtained by using a dynamic method with a modified Othmer still. This system was selected because lithium perchlorate may be more soluble in alcohol than in water (4). 

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See also in sourсe #XX -- [ ]

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