Heat Capacities of the Water + Lithium Bromide + Ethanolamine and Water + Lithium Bromide + 1,3-propandiol Systems

Abstract

Heat capacities of the water + lithium bromide + ethanolamine (LiBr/H2N(CH2)2 OHmass ratio = 3.5) and water + lithium bromide + 1,3-propanediol (LiBr/HO(CH2)3 OH massratio = 3.5) systems were measured by using an isoperibol solution calorimeter at fourtemperatures (283.15, 298.15, 313.15, and 333.15 K) and concentration ranges of (29.2 to 70.7)% and (30.7 to 68.3) %, respectively. The measured values were correlated with a simpleequation by a least-squares method and the average absolute deviations between experimentaland calculated values were 0.21 % for the water + lithium bromide + ethanolamine systemand 0.15 % for the water + lithium bromide + 1,3-propanediol system, respectively.