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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
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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.
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