Solubilities and vapor pressures of the lithium bromide plus calcium nitrate plus water system

Abstract

Solubilities and vapor pressures of the lithium bromide + calcium nitrate + water system [LiBr/Ca(NO3)(2) mass ratio = 1.0] were measured in various absorbent (lithium bromide + calcium nitrate) concentration and temperature ranges. Solubilities were measured by a visual polythermal method in the temperature range from 282.55 to 343.45 K and the experimental values were correlated with two least-squares regression equations as a Function of temperature. The average absolute deviation between the experimental and the calculated solubilities was 0.23%. Vapor pressures were measured by the boiling point method in the temperature range from 334.65 to 385.85 K and in the absorbent concentration range from 44.9 to 70.3 mass%. The experimental values were correlated with an Antoine-type equation and the overall average absolute deviation was found to be 1.06%.