Water vapor pressures, LiBr

The water vapor pressures of the dihydrate and monohydrate LiBr crystals were determined to be 0.85 mmHg and 0.6 mrnHg at 21 degrees C. respectively (Figure 5). 

Absorbed salts have a major influence on the relationship between partial pressure of water vapor and regain of the wool-salt complex (Barnard et al, 1954). Insufficient data are available to predict relative effects of a large range of salts, but large differences have been demonstrated between the effects of LiBr and NaBr. 

The vapor pressure of pure water in a porous membrane (0.22p, pore diameter) was measur and found to Ae same as bulk water. This is consistent with the Kelvin equation, which predicts only an one percent reduction in vapor pressure. Next, the vapor pressures of saturated LiBr solutions in porous membranes of various pore diameters were measured. The results obtained from these measurements are shown in Figure 5. 

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