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Volumetric Properties and Ion Interactions for Sodium Hypophosphite Aqueous Solution from 283.15 to 363.15 K at 101.325 kPa

Umarbek AlimovCollege of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, 300457, Tianjin, ChinaKaiyu ZhaoCollege of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, 300457, Tianjin, ChinaYafei GuoCollege of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, 300457, Tianjin, ChinaLingzong MengSchool of Chemistry Engineering, Linyi University, 276000, Linyi, ChinaTianlong DengCollege of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, 300457, Tianjin, China

Russian Journal of Inorganic Chemistryjournal2020en

ABI

Annotatsiya

Densities of sodium hypophosphite aqueous solution (NaH2PO2) with the molality varied from 1.019143 to 10.43887 mol kg–1 at temperature intervals of 5 K range from 283.15 to 363.15 K at 101.325 kPa were measured by a precise Anton Paar Digital vibrating-tube densimeter. From the density data, the thermal expansion coefficients, apparent volume and partial molar volumes were obtained. According to the Pitzer ion-interaction equation of the apparent molar volumes, the Pitzer single-salt parameters and their temperature-dependent correlation for NaH2PO2 were firstly obtained by the least-squares method. The model shown that apparent molar volumes agree well with the experimental values, which indicated the single salt parameters and the temperature-dependent formula are reliable.

Mavzular

Chemical and Physical Properties in Aqueous Solutions Thermodynamic properties of mixtures Electrochemical Analysis and Applications

Identifikatorlar

DOI: 10.1134/s0036023620120025

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