title: Corresponding states law for a generalized Lennard-Jones potential.
abstract: It was recently shown that vapor-liquid coexistence densities derived from Mie and Yukawa models collapse to define a single master curve when represented against the difference between the reduced second virial coefficient at the corresponding temperature and that at the critical point. In this work, we further test this proposal for another generalization of the Lennard-Jones pair potential. This is carried out for vapor-liquid coexistence densities, surface tension, and vapor pressure, along a temperature window set below the critical point. For this purpose, we perform molecular dynamics simulations by varying the potential softness parameter to produce from very short to intermediate attractive ranges. We observed all properties to collapse and yield master curves. Moreover, the vapor-liquid curve is found to share the exact shape of the Mie and attractive Yukawa. Furthermore, the surface tension and the logarithm of the vapor pressure are linear functions of this difference of reduced second virial coefficients.
authors.affiliation: Instituto Mexicano del Petróleo, Dirección de Investigación en Transformación de Hidrocarburos, Eje Central Lázaro Cárdenas 152, 07730 México D.F., Mexico.
authors.forename: P
authors.initials: P
authors.lastname: Orea
authors.affiliation: Instituto Mexicano del Petróleo, Dirección de Investigación en Exploración y Producción, Eje Central Lázaro Cárdenas 152, 07730 México D.F., Mexico.
authors.forename: A
authors.initials: A
authors.lastname: Romero-Martínez
authors.affiliation: Área de Física de Procesos Irreversibles, División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana-Azcapotzalco, Ave. San Pablo 180, 02200 México D.F., Mexico.
authors.forename: E
authors.initials: E
authors.lastname: Basurto
authors.affiliation: Área de Física de Procesos Irreversibles, División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana-Azcapotzalco, Ave. San Pablo 180, 02200 México D.F., Mexico.
authors.forename: C A
authors.initials: CA
authors.lastname: Vargas
authors.affiliation: Área de Física de Procesos Irreversibles, División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana-Azcapotzalco, Ave. San Pablo 180, 02200 México D.F., Mexico.
authors.forename: G
authors.initials: G
authors.lastname: Odriozola