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Automated apparatus for gas solubility measurements
Fonseca, I. M. A.; Almeida, J. P. B.; Fachada, H. C.An automated apparatus based on the Ben-Naim-Baer and Tominaga et al. designs [A. Ben-Naim, S. Baer, Trans. Faraday Soc. 59 (1963) 2735-2738; T. Tominaga, R. Battino, H.K. Gorowara, R.D. Dixon, J. Chem. Eng. Data 31 (1986) 175-180] has been implemented for measurements of gas solubilities in liquids under atmospheric pressure and room temperatures. The uncertainty in the measurement of gas solubilities was esti...
Automated apparatus for gas solubility measurements
Fonseca, I. M. A.; Almeida, J. P. B.; Fachada, H. C.An automated apparatus based on the Ben-Naim–Baer and Tominaga et al. designs [A. Ben-Naim, S. Baer, Trans. Faraday Soc. 59 (1963) 2735–2738; T. Tominaga, R. Battino, H.K. Gorowara, R.D. Dixon, J. Chem. Eng. Data 31 (1986) 175–180] has been implemented for measurements of gas solubilities in liquids under atmospheric pressure and room temperatures. The uncertainty in the measurement of gas solubilities was esti...
Surface and interfacial tensions of the systems water + n-butyl acetate + metha...
Santos, B. M. S.; Ferreira, A. G. M.; Fonseca, I. M. A.The surface tension in the homogeneous domain of the ternary liquid mixtures water + n-butyl acetate + methanol and water + n-pentyl acetate + methanol as well as of the constituent binaries has been measured at 303.15 K and atmospheric pressure. The respective excess surface tension was correlated as a function of the composition using empirical and thermodynamic-based relations. The liquid interfacial tension...
Error analysis in Barker's method: extension to ternary systems
Fonseca, I. M. A.; Lobo, Lélio Q.An extension of Barker's method to ternary systems is briefly outlined. Expressions for the standard deviations of the excess molar Gibbs free energy and the equilibrium pressure as functions of composition are obtained. These expressions are applied to accurate experimental data for the cryogenic (liquid) mixture CH3F+N2O+Xe recently measured in our laboratory. ; http://www.sciencedirect.com/science/article...
(Vapour + liquid) equilibria of (fluoromethane + tetrafluoromethane) at the tem...
Fonseca, I. M. A.; Sardinha, G. G.; Lobo, Lélio Q.The total vapour pressure of binary liquid mixtures of (fluoromethane+tetrafluoromethane) has been measured at the temperature 130.46 K. Two partially miscible liquid phases were found. The excess molar Gibbs energy was calculated in the region where the two liquids are mutually soluble. For the hypothetical equimolar mixture,GEm01 (x=0.5)=846 J<@TBLEND>mol-1. ; http://www.sciencedirect.com/science/article/B...
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