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Citation: 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, 10(3): 12-15. shu

CHEMISTRY OF BORATE IN SALT LAKE BRINE ⅩⅤ. THERMOCHEMICAL STUDY OF Mg-BORATES

1.
1. Institute of Salt Lakes, Chinese Academy of Sciences, 810008 Xining;
2.
2. Department of Chemistry, Wuhan University, Wuhan

Received Date: 16 June 1992
Available Online: 14 September 1992
Fund Project:

The enthalpies of solution of two Mg-borates(2MgO·2B₂O₃·MgCl₂·14H₂O and MgO·2B₂O₃·9H₂O) in 0.997mol/L HCl 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 -5807.07k J/mol separately. The standard molar entropy of MgO·2B₂O₃·9H₂O was also given.
- Mg-borate,
- enthalpy of solution,
- standard enthalpy of formation
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