Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate
This paper reports the molar heat capacities of β-CsB5O8·4H2O, which were measured by an accurate adiabatic calorimeter from 298 to 373 K with a heating rate of 0.1 K/min under nitrogen atmosphere. Neither phase transition nor thermal anomalies were observed. The molar heat capacity against temperat...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2020/5198374 |
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| author | Kangrui Sun Panpan Li Long Li Yafei Guo Tianlong Deng |
| author_facet | Kangrui Sun Panpan Li Long Li Yafei Guo Tianlong Deng |
| author_sort | Kangrui Sun |
| collection | DOAJ |
| description | This paper reports the molar heat capacities of β-CsB5O8·4H2O, which were measured by an accurate adiabatic calorimeter from 298 to 373 K with a heating rate of 0.1 K/min under nitrogen atmosphere. Neither phase transition nor thermal anomalies were observed. The molar heat capacity against temperature was fitted to a polynomial equation of Cp,m (J·mol−1·K−1) = 618.07702 + 39.52669[T − (Tmax + Tmin)/2]/(Tmax − Tmin)/2] − 3.46888[(T − (Tmax + Tmin)/2)/(Tmax − Tmin)/2]2 + 7.9441[(T − (Tmax+ Tmin)/2)/(Tmax − Tmin)/2]3. The relevant thermodynamic functions of enthalpy (HT − H298.15), entropy (ST − S298.15), and Gibbs free energy (GT − G298.15) of cesium pentaborate tetrahydrate from 298 to 375 K of 5 K intervals are also obtained on the basis of relational expression equations between thermodynamic functions and the molar heat capacity. |
| format | Article |
| id | doaj-art-01752dd672ee4c5199b27aaa695417e8 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-01752dd672ee4c5199b27aaa695417e82025-02-03T01:25:50ZengWileyJournal of Chemistry2090-90632090-90712020-01-01202010.1155/2020/51983745198374Heat Capacity and Thermodynamic Properties of Cesium Pentaborate TetrahydrateKangrui Sun0Panpan Li1Long Li2Yafei Guo3Tianlong Deng4Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaTianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaTianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaTianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaTianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaThis paper reports the molar heat capacities of β-CsB5O8·4H2O, which were measured by an accurate adiabatic calorimeter from 298 to 373 K with a heating rate of 0.1 K/min under nitrogen atmosphere. Neither phase transition nor thermal anomalies were observed. The molar heat capacity against temperature was fitted to a polynomial equation of Cp,m (J·mol−1·K−1) = 618.07702 + 39.52669[T − (Tmax + Tmin)/2]/(Tmax − Tmin)/2] − 3.46888[(T − (Tmax + Tmin)/2)/(Tmax − Tmin)/2]2 + 7.9441[(T − (Tmax+ Tmin)/2)/(Tmax − Tmin)/2]3. The relevant thermodynamic functions of enthalpy (HT − H298.15), entropy (ST − S298.15), and Gibbs free energy (GT − G298.15) of cesium pentaborate tetrahydrate from 298 to 375 K of 5 K intervals are also obtained on the basis of relational expression equations between thermodynamic functions and the molar heat capacity.http://dx.doi.org/10.1155/2020/5198374 |
| spellingShingle | Kangrui Sun Panpan Li Long Li Yafei Guo Tianlong Deng Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate Journal of Chemistry |
| title | Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate |
| title_full | Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate |
| title_fullStr | Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate |
| title_full_unstemmed | Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate |
| title_short | Heat Capacity and Thermodynamic Properties of Cesium Pentaborate Tetrahydrate |
| title_sort | heat capacity and thermodynamic properties of cesium pentaborate tetrahydrate |
| url | http://dx.doi.org/10.1155/2020/5198374 |
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