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Citation: Li Wu, Gao Shiyang, Zeng Zhongmin, Xia Shuping. Study on the Thermochemistry of Mgo-MgCl₂-H₂O Solution[J]. Chinese Journal of Applied Chemistry, ;1995, 12(4): 36-39. shu

Study on the Thermochemistry of Mgo-MgCl₂-H₂O Solution

Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008

Received Date: 31 October 1994
Revised Date: 9 February 1995

The enthalpy changes on mixing and reaction between synthetical MgO-27.56% MgCl₂-H₂O solution and azeotropic hydrochloric acid have been studied with a precise calorimeter. It is shown that the active magnesium oxide has different thermochemical be-havior in 27.56%MsCl₂-H₂O solution. When the concentration of MgO is ≤0.8914mmol (50mL solution) the molar enthalpy of MgO is almost identical small than when the concen-tration is higher. A mechanism for the reaction has been proposed in combination the results with that obtained in azeotropic hydrochloric acid-pH titration.
- MgO,
- aqueous magnesium chloride solution,
- azeotropic hydrochloric acid reac-tion,
- reaction mechanism,
- calorimetric titration
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Study on the Thermochemistry of Mgo-MgCl₂-H₂O Solution