{"term":{"id":"06175","doi":"10.1351\/goldbook.S06175","code":"S06175","status":"current","longtitle":"IUPAC Gold Book - surface excess entropy","title":"surface excess entropy","termversion":"2.3.3","lastupdated":"2014-02-24","definitions":[{"id":"1","text":"Defined by: S σ = S- S α- S β = S- V α S ) and (S m β V m β) are the entropy densities in the two bulk phases, where S m α and S m β are the mean molar entropies and V m α and V m β are the mean molar volumes of the two phases.","links":[{"title":"entropy","type":"goldify","url":"https:\/\/goldbook.iupac.org\/terms\/view\/E02149"}],"math":[{"alttext":"S σ = S- S α- S β = S- V α S ","latex":"S^{\\unicode[Times]{x3C3}} = S - S^{\\unicode[Times]{x3B1} }- S^{\\unicode[Times]{x3B2} }=S- V^{\\unicode[Times]{x3B1} }\\ \\frac{S_{\\text{m}}^{\\unicode[Times]{x3B1} }}{V_{\\text{m}}^{\\unicode[Times]{x3B1} }}- V^{\\unicode[Times]{x3B2} }\\ \\frac{S_{\\text{m}}^{\\unicode[Times]{x3B2} }}{V_{\\text{m}}^{\\unicode[Times]{x3B2} }}"},{"alttext":"S m α V m α","latex":"\\frac{S_{\\text{m}}^{\\unicode[Times]{x3B1} }}{V_{\\text{m}}^{\\unicode[Times]{x3B1} }}"},{"alttext":"S m β V m β","latex":"\\frac{S_{\\text{m}}^{\\unicode[Times]{x3B2} }}{V_{\\text{m}}^{\\unicode[Times]{x3B2} }}"},{"alttext":"S m α","latex":"S_{\\text{m}}^{\\unicode[Times]{x3B1} }"},{"alttext":"S m β","latex":"S_{\\text{m}}^{\\unicode[Times]{x3B2} }"},{"alttext":"V m α","latex":"V_{\\text{m}}^{\\unicode[Times]{x3B1} }"},{"alttext":"V m β","latex":"V_{\\text{m}}^{\\unicode[Times]{x3B2} }"}],"sources":["PAC, 1972, 31, 577. 'Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry' on page 599 (https:\/\/doi.org\/10.1351\/pac197231040577)"]}],"links":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/S06175\/html","json":"https:\/\/goldbook.iupac.org\/terms\/view\/S06175\/json","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/S06175\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/S06175\/plain","pdf":"https:\/\/goldbook.iupac.org\/terms\/view\/S06175\/pdf"},"citation":"Citation: 'surface excess entropy' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351\/goldbook.S06175","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2024-07-18T08:35:14+00:00"}}