Abstract
Densities and heat capacities of dilute aqueous solutions (0.025 to 0.4 mol⋅kg−1) of trifluoromethanesulfonic acid (triflic acid) were measured with original high-temperature, high-pressure instruments at temperatures and pressures up to 574 K and 31 MPa, respectively. Standard molar volumes and standard molar heat capacities were obtained via extrapolation of the apparent molar properties to infinite dilution. The evolution of these standard derivative properties of triflic acid with temperature and pressure is qualitatively compared with that of other acids of different strengths.
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Xiao, C., Tremaine, P.R.: Apparent molar volumes of aqueous sodium trifluoromethanesulfonate and trifluoromethanesulfonic acid from 283 K to 600 K and pressures up to 20 MPa. J. Solution Chem. 26, 277–294 (1997)
Xiao, C., Pham, T., Xie, W., Tremaine, P.R.: Apparent molar volumes and heat capacities of aqueous trifluoromethanesulfonic acid and its sodium salt from 283 to 328 K. J. Solution Chem. 30, 201–211 (2001)
Hynek, V., Obsil, M., Majer, V., Quint, J., Grolier, J.-P.E.: A vibrating tube flow densimeter for measurements with corrosive solutions at temperatures up to 723 K and pressures up to 40 MPa. Int. J. Thermophys. 18, 719–732 (1997)
Hill, P.: A unified fundamental equation for the thermodynamic properties of H2O. J. Phys. Chem. Ref. Data 19, 1233–1274 (1990)
Archer, D.: Thermodynamic properties of the NaCl + H2O system. II: Thermodynamic properties of NaCl(aq), NaCl⋅2H2O(cr) and phase equilibria. J. Phys. Chem. Ref. Data 21, 793–829 (1992)
Hnedkovsky, L., Hynek, V., Majer, V., Wood, R.H.: A new version of differential flow heat capacity calorimeter; tests of heat loss corrections and heat capacities of aqueous NaCl from T=300 K to T=623 K. J. Chem. Thermodyn. 34, 755–782 (2002)
Archer, D.G., Wang, P.: The dielectric constant of water and Debye-Hückel limiting law slopes. J. Phys. Chem. Ref. Data 19, 371–411 (1990)
Majer, V., Sedlbauer, J., Wood, R.H.: Calculation of standard thermodynamic properties of aqueous electrolytes and nonelectrolytes. In: Palmer, D.A., Harvey, A.H., Fernandez-Prini, R. (eds.) Aqueous Systems at Elevated Temperatures and Pressures; Physical Chemistry in Water, Steam and Hydrothermal Solutions, pp. 99–144. Elsevier, Amsterdam (2004)
Ballerat-Busserolles, K., Sedlbauer, J., Majer, V.: Standard thermodynamic properties of H3PO4(aq) over a wide range of temperatures and pressures. J. Phys. Chem. B. 111, 181–190 (2007)
Hnedkovsky, L., Majer, V., Wood, R.H.: Volumes and heat capacities of H3BO3(aq) at temperatures from 298.15 K to 705 K and at pressures to 35 MPa. J. Chem. Thermodyn. 27, 801–814 (1995)
Majer, V., Sedlbauer, J., Hnedkovsky, L., Wood, R.H.: Thermodynamics of aqueous acetic and propionic acids and their anions over a wide range of temperatures and pressures. Phys. Chem. Chem. Phys. 2, 2907–2917 (2000)
Anisimov, M.A., Sengers, J.V., Levelt Sengers, J.M.V.: Near-critical behaviour in aqueous systems. In: Palmer, D.A., Harvey, A.H., Fernandez-Prini, R. (eds.) Aqueous Systems at Elevated Temperatures and Pressures; Physical Chemistry in Water, Steam and Hydrothermal Solutions, pp. 29–72. Elsevier, Amsterdam (2004)
Slavik, M., Sedlbauer, J., Ballerat-Busserolles, K., Majer, V.: Heat capacities of aqueous solutions of acetone; 2,5-hexanedione; diethyl ether; 1,2-dimethoxyethane; benzyl alcohol; and cyclohexanol at temperatures to 523 K. J. Solution Chem. 36, 107–134 (2007)
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Pourtier, E., Ballerat-Busserolles, K. & Majer, V. Standard Molar Volumes and Heat Capacities of Aqueous Solutions of Trifluoromethanesulfonic Acid at Temperatures up to 573 K and Pressures to 30 MPa. J Solution Chem 38, 601–618 (2009). https://doi.org/10.1007/s10953-009-9389-0
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DOI: https://doi.org/10.1007/s10953-009-9389-0