Thermodynamic properties of {(NH4)2SO4(aq) + Li2SO4(aq)} and {(NH4)2SO 4(aq) + Na2SO4(aq)} at a temperature of 298.15 K |
| |
| Institution: | 1. Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India;2. Department of Chemistry, DAV University, Jalandhar 144012, Punjab, India;1. Crystal Growth Laboratory, Department of Physics, Milliya Arts, Science and Management Science College, Beed-431122, Maharashtra, India;2. Department of Physics, Sant Gadge Baba Amravati University, Amravati-444602, Maharashtra, India;3. RUSA Centre for Advanced Sensor Technology, Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad-431005, Maharashtra, India;1. Chemours Fluorochemicals, 200 Powder Mill Rd, Experimental Station. E262/339, Wilmington DE 19803, United States;2. DuPont Corporate Center for Analytical Sciences, 200 Powder Mill Rd, Experimental Station. E262/339, Wilmington DE 19803, United States;1. William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Avenue, Columbus, OH 43210, USA;2. Department of Biomedical Engineering, The Ohio State University, 1080 Carmack Rd., Columbus, OH 43210, USA;3. Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave., Columbus, OH 43210, USA;1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;2. Development and Research Centre, China Geological Survey, Beijing 100037, China;3. Geological Sciences, School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Westville Campus, Durban, South Africa;4. College of Earth Sciences, Jilin University, Changchun 130061, China;5. Beijing Research Institute of Uranium Geology, Beijing 100029, China |
| |
| Abstract: | The water activities and osmotic coefficients of aqueous solutions of {(NH4 )2SO 4 + Li 2SO 4} and {(NH4 )2SO 4 + Na 2SO 4} have been determined at a temperature of 298.15 K with a hygrometric method, at molalities in the region 0.2 mol · kg − 1 to saturation of the solutes for different fractional ionic-strengthsy = 0.2, 0.5, and 0.8 of (NH 4)2SO 4. The experimental results are compared with the predictions obtained from our extended compared additivity model, as well as the models reported by Zdanovskii, Stokes and Robinson, Pitzer, and Lietzke-Stoughton. From these measurements, parameters of Pitzers model have been determined. These were used to predict solute activity coefficients in the mixture and calculate the excess Gibbs function at total molalities for different y for these systems. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
