Viscosity of aqueous Ni(NO3)2 solutions at temperatures from (297 to 475) K and at pressures up to 30 MPa and concentration between (0.050 and 2.246) mol · kg−1 |
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| Institution: | 1. Institute for Geothermal Problems of the Dagestan Scientific Center of the Russian Academy of Sciences, 367003 Makhachkala, Shamilya Str., 39-A Dagestan, Russia;2. Azerbaijan State Oil Academy, Baku 370601, Azerbaijan;1. College of Chemistry & Molecular Engineering, Zhengzhou University, Zhengzhou 450052, PR China;2. Veterinary Drug Supervision & Animal Husbandry Bureau of Henan Province, Zhengzhou 450002, PR China;3. School of Chemistry, Nankai University, Tianjin 300071, PR China;1. Laboratory of Structural Organic Chemistry, Department of Chemistry, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092 Tunis, Tunisia;2. Equipe de RMN en milieu orienté, Université Paris-Sud, ICMMO, UMR CNRS 8182, Batiment. 410, 91405 Orsay Cedex, France;1. Department of Physics, Faculty of Science, Chulalongkorn University, Phyathai Road, Bangkok 10330, Thailand;2. Research Center in Thin Film Physics, Thailand Center of Excellence in Physics, CHE, 328 Si Ayutthaya Road, Bangkok 10400, Thailand;1. Department of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;2. Microsystems Technology Laboratories, Massachusetts Institute of Technology, Cambridge, MA 02139, United States |
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| Abstract: | Viscosity of nine aqueous Ni(NO3)2 solutions (0.050, 0.153, 0.218, 0.288, 0.608, 0.951, 1.368, 1.824, and 2.246) mol · kg−1 was measured in the temperature range from (297 to 475) K and at pressures (0.1, 10, 20, and 30) MPa. The measurements were carried out with a capillary flow technique. The total experimental uncertainty of viscosity, pressure, temperature, and composition measurements were estimated to be less than 1.6%, 0.05%, 15 mK, and 0.02%, respectively. All experimental and derived results are compared with experimental and calculated values reported in the literature. Extrapolation of the solution viscosity measurements to zero concentration (pure water values) for the given temperature and pressure are in excellent agreement (average absolute deviation, AAD = 0.13%) with the values of pure water viscosity from IAPWS formulation J. Kestin, J.V. Sengers, B. Kamgar-Parsi, J.M.H. Levelt Sengers, J. Phys. Chem. Ref. Data 13 (1984) 175–189]. The viscosity data for the solutions as a function of concentration have been interpreted in terms of the extended Jones–Dole equation for strong electrolytes. The values of viscosity A-, B-, and D-coefficients of the extended Jones–Dole equation for the relative viscosity (η/η0) of aqueous Ni(NO3)2 solutions as a function of temperature are studied. The derived values of the viscosity A- and B-coefficients were compared with the results predicted by Falkenhagen–Dole theory (limiting law) of electrolyte solutions and the values calculated with the ionic B-coefficient data. The measured values of viscosity for the solutions were also used to calculate the effective rigid molar volumes in the extended Einstein relation for the relative viscosity (η/η0). |
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