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The fusion curves of xenon, krypton, and argon
Ferreira, A. G. M.; Lobo, Lélio Q.The experimental results on the fusion of the heavier rare gases at very high pressures, obtained in the last 20 years, are examined and analysed in conjunction with the measurements made at lower pressures from 1940 onwards. The parameters in the Simon equation for the melting curves of Xe, Kr, and Ar are determined, and the coordinates of a possible high-pressure s(fcc) + s(hcp) + l triple-point are identifie...
On the vapour pressure of radon
Ferreira, A. G. M.; Lobo, Lélio Q.The few, rather scarce, and old data on the vapour pressure and sublimation pressure of radon are re-examined in light of the Wagner equation, which is applied for the first time (as far as we are aware) to the sublimation curve. Numerical coefficients have been established for the representation of both equilibrium curves, and estimates are advanced for the coordinates of the critical point, the triple-point, ...
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...
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