应用化学 ›› 1993, Vol. 0 ›› Issue (3): 12-15.
• 研究论文 • 上一篇 下一篇
李军1, 高世扬1, 屈景年2, 屈松生2
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Li Jun1, Gao Shiyang1, Qu Jingnian2, Qu Songsheng2
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摘要： 合成氯柱硼镁石(2MgO·2B2O3·MgCl2·14H2O)和章氏硼镁石(MgO·2B2O3·9H2O),用恒定温度环境反应热量计测定溶解热和反应热的基础上,运用热化学循环原理计算得到这两种硼酸盐的标准生成焓。
关键词: 镁硼酸盐, 溶解热, 标准生成焓
Abstract: The enthalpies of solution of two Mg-borates(2MgO·2B2O3·MgCl2·14H2O and MgO·2B2O3·9H2O) in 0.997mol/LHCl solution were measured by using isoperibel reaction colorimeter.The standard enthalpies of formation of the two Mg-borate salts were obtained according to thermochemistry theory. The values are-8638.42kJ/tool and-5807.07kJ/mol separately. The standard molar entropy of MgO·2B2O3·9H2O was also given.
Key words: Mg-borate, enthalpy of solution, standard enthalpy of formation
李军, 高世扬, 屈景年, 屈松生. 盐卤硼酸盐化学 ⅩⅤ.2MgO·2B2O3·MgCl2·14H2O和MgO·2B2O3·9H2O的热化学研究[J]. 应用化学, 1993, 0(3): 12-15.
Li Jun, Gao Shiyang, Qu Jingnian, Qu Songsheng. CHEMISTRY OF BORATE IN SALT LAKE BRINE ⅩⅤ.THERMOCHEMICAL STUDY OF Mg-BORATES[J]. Chinese Journal of Applied Chemistry, 1993, 0(3): 12-15.
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