Heat Capacity and Thermodynamic Property of Lithium Pentaborate Pentahydrate
The heat capacity of lithium pentaborate pentahydrate has been measured using an adiabatic calorimeter at the temperature from 297 to 375 K. No phase transition and thermal anomalies were observed. The molar heat capacity of LiB5O8·5H2O can be expressed as Cp,m (J·mol−1·K−1) = 396.79376 + 35.87528 [...
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| Language: | English |
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Wiley
2018-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2018/7962739 |
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| author | Wanjing Cui Long Li Yafei Guo Sisi Zhang Tianlong Deng |
| author_facet | Wanjing Cui Long Li Yafei Guo Sisi Zhang Tianlong Deng |
| author_sort | Wanjing Cui |
| collection | DOAJ |
| description | The heat capacity of lithium pentaborate pentahydrate has been measured using an adiabatic calorimeter at the temperature from 297 to 375 K. No phase transition and thermal anomalies were observed. The molar heat capacity of LiB5O8·5H2O can be expressed as Cp,m (J·mol−1·K−1) = 396.79376 + 35.87528 [T-(Tmax+Tmin)/2]/[(Tmax-Tmin)/2] + 0.16494[T-(Tmax+Tmin)/2]/[(Tmax-Tmin)/2]2 + 8.3083[T-(Tmax+Tmin)/2]/[(Tmax-Tmin)/2]3, where T is the temperature in Kelvin, Tmax=375 K, and Tmin=297 K. The thermodynamic functions of (HT-H298.15), (ST-S298.15), and (GT-G298.15) of LiB5O8·5H2O are obtained via the molar heat capacity at the temperature of 5 K intervals. |
| format | Article |
| id | doaj-art-a0ba47ed213a4277940a2cf517ad2857 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-a0ba47ed213a4277940a2cf517ad28572025-02-03T07:25:16ZengWileyJournal of Chemistry2090-90632090-90712018-01-01201810.1155/2018/79627397962739Heat Capacity and Thermodynamic Property of Lithium Pentaborate PentahydrateWanjing Cui0Long Li1Yafei Guo2Sisi Zhang3Tianlong Deng4Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaTianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaTianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaTianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaTianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, ChinaThe heat capacity of lithium pentaborate pentahydrate has been measured using an adiabatic calorimeter at the temperature from 297 to 375 K. No phase transition and thermal anomalies were observed. The molar heat capacity of LiB5O8·5H2O can be expressed as Cp,m (J·mol−1·K−1) = 396.79376 + 35.87528 [T-(Tmax+Tmin)/2]/[(Tmax-Tmin)/2] + 0.16494[T-(Tmax+Tmin)/2]/[(Tmax-Tmin)/2]2 + 8.3083[T-(Tmax+Tmin)/2]/[(Tmax-Tmin)/2]3, where T is the temperature in Kelvin, Tmax=375 K, and Tmin=297 K. The thermodynamic functions of (HT-H298.15), (ST-S298.15), and (GT-G298.15) of LiB5O8·5H2O are obtained via the molar heat capacity at the temperature of 5 K intervals.http://dx.doi.org/10.1155/2018/7962739 |
| spellingShingle | Wanjing Cui Long Li Yafei Guo Sisi Zhang Tianlong Deng Heat Capacity and Thermodynamic Property of Lithium Pentaborate Pentahydrate Journal of Chemistry |
| title | Heat Capacity and Thermodynamic Property of Lithium Pentaborate Pentahydrate |
| title_full | Heat Capacity and Thermodynamic Property of Lithium Pentaborate Pentahydrate |
| title_fullStr | Heat Capacity and Thermodynamic Property of Lithium Pentaborate Pentahydrate |
| title_full_unstemmed | Heat Capacity and Thermodynamic Property of Lithium Pentaborate Pentahydrate |
| title_short | Heat Capacity and Thermodynamic Property of Lithium Pentaborate Pentahydrate |
| title_sort | heat capacity and thermodynamic property of lithium pentaborate pentahydrate |
| url | http://dx.doi.org/10.1155/2018/7962739 |
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