Non-ideality of an 'ideal' liquid mixture: (36Ar + 40Ar)

Jorge Carreira Gonçalves Calado; Florbela A. Dias; José N. Canogia Lopes; Manuel Nunes da Ponte; Luís P. N. Rebelo

doi:10.1039/a910322h

Non-ideality of an 'ideal' liquid mixture: (³⁶Ar + ⁴⁰Ar)

Jorge Carreira Gonçalves Calado, Florbela A. Dias, José N. Canogia Lopes, Manuel Nunes da Ponte, Luís P. N. Rebelo

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

A mixture of two isotopes of the same rare gas represents the extreme case of molecular simplicity. In this work, the excess molar Gibbs energies for liquid mixtures of (³⁶Ar + ⁴⁰Ar) have been measured for the first time, with unprecedented precision. Results show that the excess vapour pressure of an equimolar mixture is approximately 2.5 Pa in the 85-96 K temperature range. The results are well predicted by a modified version of the quantum theory of isotope effects in mixtures.

Original language	English
Pages (from-to)	1095-1097
Number of pages	3
Journal	Physical Chemistry Chemical Physics
Volume	2
Issue number	5
DOIs	https://doi.org/10.1039/a910322h
Publication status	Published - 1 Mar 2000

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title = "Non-ideality of an 'ideal' liquid mixture: (36Ar + 40Ar)",

abstract = "A mixture of two isotopes of the same rare gas represents the extreme case of molecular simplicity. In this work, the excess molar Gibbs energies for liquid mixtures of (36Ar + 40Ar) have been measured for the first time, with unprecedented precision. Results show that the excess vapour pressure of an equimolar mixture is approximately 2.5 Pa in the 85-96 K temperature range. The results are well predicted by a modified version of the quantum theory of isotope effects in mixtures.",

author = "Calado, \{Jorge Carreira Gon{\c c}alves\} and Dias, \{Florbela A.\} and \{Canogia Lopes\}, \{Jos{\'e} N.\} and \{Nunes da Ponte\}, Manuel and Rebelo, \{Lu{\'i}s P. N.\}",

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AU - Calado, Jorge Carreira Gonçalves

AU - Dias, Florbela A.

AU - Canogia Lopes, José N.

AU - Nunes da Ponte, Manuel

AU - Rebelo, Luís P. N.

PY - 2000/3/1

Y1 - 2000/3/1

N2 - A mixture of two isotopes of the same rare gas represents the extreme case of molecular simplicity. In this work, the excess molar Gibbs energies for liquid mixtures of (36Ar + 40Ar) have been measured for the first time, with unprecedented precision. Results show that the excess vapour pressure of an equimolar mixture is approximately 2.5 Pa in the 85-96 K temperature range. The results are well predicted by a modified version of the quantum theory of isotope effects in mixtures.

AB - A mixture of two isotopes of the same rare gas represents the extreme case of molecular simplicity. In this work, the excess molar Gibbs energies for liquid mixtures of (36Ar + 40Ar) have been measured for the first time, with unprecedented precision. Results show that the excess vapour pressure of an equimolar mixture is approximately 2.5 Pa in the 85-96 K temperature range. The results are well predicted by a modified version of the quantum theory of isotope effects in mixtures.

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Non-ideality of an 'ideal' liquid mixture: (³⁶Ar + ⁴⁰Ar)

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