Chinese Journal of Applied Chemistry ›› 1993, Vol. 0 ›› Issue (3): 12-15.
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Li Jun1, Gao Shiyang1, Qu Jingnian2, Qu Songsheng2
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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
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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