The Construction and Calibration of a Precision Solution Calorimeter

Abstract

Abstract: Aprecision solution calorimeter was constructed in the laboratory.Athermsistor thermometer was used for temperature measurement.The calorimeter was calibrated with calorimetric standardreference materials——spectroscopically pure potassium chloride and tris (hydroxymethyl)aminomethane from N.B.S.-724 a in USA.The results obtained at 25℃ was found to be 17518± 15 J.mol^-1 for the enthalpy of solution of potassium chloride in water and -29729 ±31 J.mol^-1 for the enthalpy of reaction of TRISin 0.1008 mol/L HCl.The values are well in agreement with the published results.The reliability of this apparatus was confirmed

Key words: Tetraphenylborates, Thermochemistry, Heat of solution, Calorimeter, Calibration

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Zou Lizhuang, Zhang Zhonghai, Xu Guiduan, Qu Songsheng. The Construction and Calibration of a Precision Solution Calorimeter[J]. Chem. J. Chinese Universities, 1989, 10(12): 1211.

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The Construction and Calibration of a Precision Solution Calorimeter

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