Standard absolute entropies, S-298(O), from volume or density - Part II. Organic liquids and solids
UNSPECIFIED. (2004) Standard absolute entropies, S-298(O), from volume or density - Part II. Organic liquids and solids. THERMOCHIMICA ACTA, 414 (2). pp. 125-130. ISSN 0040-6031Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.tca.2003.12.006
The standard absolute entropies of many materials are unknown, which precludes a full understanding of their thermodynamic stabilities. We show, for both organic liquids and solids, that entropies are reliably linearly correlated with Volume per molecule, V-m (nm(3) per molecule) (or molar volume, M/rho (cm(3) mol(-1))); thus, permitting simple evaluation of standard entropies (J K-1 mol(-1)) at 298 K. The regression lines generally pass close to the origin, with formulae: For organic liquids: S(298)degrees(l) (J K-1 mol(-1)) = 1133(V-m (nm(3) per molecule)) + 44 or S(298)degrees (l) (J K-1 mol(-1)) = 1.881 [M/rho (cm(3) mol(-1))] + 44 For organic solids: S(298)degrees (s) (J K-1 mol(-1)) = 774(V-m (nm(3) per molecule)) + 57 or S(298)degrees (s) (J K-1 mol(-1)) = 1.285 [M/rho (cm(3) mol(-1))] + 57 These results complement similar studies (by ourselves and others) demonstrating linear entropy-volume correlations for ionic solids (including minerals, simple ionic solids and ionic hydrates and solvates), but are now-for the first time-demonstrated for organic materials. Part I of this series of papers  applies a similar analysis to ionic solids. (C) 2003 Elsevier B.V. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > QD Chemistry|
|Journal or Publication Title:||THERMOCHIMICA ACTA|
|Publisher:||ELSEVIER SCIENCE BV|
|Date:||27 May 2004|
|Number of Pages:||6|
|Page Range:||pp. 125-130|
Actions (login required)