The relationship between vapour pressure, vaporization enthalpy, and enthalpy of transfer from solution to gas: An extension of the Martin equation

Author : A.Srisaipet, K.Aryusuk, S.Lilitchan and K.Krisnangkura

Journal : The Journal of Chemical Thermodynamics, 2007, Volume 39, Issue 7, Pages 1077-1084.

More Information : https://doi.org/10.1016/j.jct.2006.12.014

Abstract

Martin’s equation, Δ^g_slng G = Δ^g_slng G_o + zδ^g_slng G, is extended to cover vaporization free energy (Δ^g_l G) . The extended equation is further expanded in terms of enthalpy and entropy and then used to correlate vaporization enthalpy (Δ^g_l H)and enthalpy of transfer from solution to gas (Δ^g_slnH) . Data available in the literatures are used to validate and support the speculations derived from the proposed equation.

Keywords

Enthalpy, Free energy, Gas chromatography, Vapour pressure