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A versatile and high-precision solution—reaction isoperibol calorimeter

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Abstract

A new solution-reaction isoperibol calorimeter was developed to measure enthalpies of solution and reaction. A new system of sample cell was developed to avoid the breaking of glass ampoules, hence making the sample cell reusable. The system is suitable for measuring molar enthalpies of solid-liquid and liquid-liquid interactions at different temperatures. The reproducibility and accuracy of the apparatus were tested by measuring the enthalpy of solution of KCl in water at 298.15 K and the enthalpy of protonation of THAM in HCl (0.1 M) at 298.15 K. The results showed the uncertainty taken as the reproducibility was ±0.3% and the difference with the literature values was within ±0.5%.

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Authors and Affiliations

  1. Laboratorio de Termodinámica de Soluciones, Departamento de Química, Facultad de Ciencias, Universidad de los Andes Bogotá D.C., Andes Bogotá, Colombia

    E. F. Vargas, J. C. Moreno, J. Forero & D. F. Parra

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  1. E. F. Vargas
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  2. J. C. Moreno
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  3. J. Forero
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  4. D. F. Parra
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Correspondence to E. F. Vargas.

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Vargas, E.F., Moreno, J.C., Forero, J. et al. A versatile and high-precision solution—reaction isoperibol calorimeter. J Therm Anal Calorim 91, 659–662 (2008). https://doi.org/10.1007/s10973-007-7613-y

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  • DOI: https://doi.org/10.1007/s10973-007-7613-y

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