Densities and Apparent Molar Volumes of Aqueous Solutions
of Li2B4O7 and Their Correlation with the Pitzer Model
F. Y. Wang*
School of Chemistry and Chemical Engineering, Qinghai Nationalities University, Xi’ning, 810008 China
Correspondence to: *e-mail: wangfy09@hotmail.com
Received 3 May, 2020
Abstract—Densities of aqueous solutions of Li2B4O7 have been measured by using vibrating-tube densitometer over the temperature ranges 288.15 ≤ T/K ≤ 323.15 at 0.1 MPa pressure. The apparent molar volumes of Li2B4O7 derived from these data have been fitted using Pitzer ion interaction model. The volumetric ion interaction parameters of Li2B4O7 at various temperatures have been determined.
Keywords: lithium tetraborate, density, apparent molar volume, Pitzer ion interaction model
DOI: 10.1134/S0036023621010125