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Citation: Li Wu, Gao Shi-Yang, Zeng Zhong-Min, Xia Shu-Ping. Study on the Reaction Thermochemistry of Simulated Synthesized Brine during Hydrochloric Acid Titration[J]. Acta Physico-Chimica Sinica, ;1995, 11(12): 1101-1104. doi: 10.3866/PKU.WHXB19951209 shu

Study on the Reaction Thermochemistry of Simulated Synthesized Brine during Hydrochloric Acid Titration

1.
Institute of Qinghai Salt Lakes,Academia Sinica,Xining 810008

Received Date: 28 February 1995
Available Online: 15 December 1995

The enthalpy changes of M ﹒2B2O3-27.56% MgCl2-H2O and H3BO3-27.56%MgCls-H2O solution during azeotropic hydrochloric acid titration have been studied with Sweden LKB8700-1 precise calorimeter. The results indicated that the reaction enthalpy changes of solutes (expressed as H3BO3 and M ﹒2B2O3) increase with the increase of their concentrations in the solution. Combined with the pH titration curves of M ﹒2B2O3-27.56% MgCl2-H2O with that of azeotropic hydrochloric acid, the reaction mechanism of the solutions with hydrochloric acid has been discussed.
- Magnesium tetraborate,
- Magnesium chloride solution,
- Calorimetric titration,
- Mechanism
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