Persistent confusion of total entropy and chemical system entropy in chemical thermodynamics

被引：20

作者：

Weber, G

机构：

[1] University of Illinois, School of Chemical Sciences, Urbana, IL 61801

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1996年 / 93卷 / 15期

关键词：

van'tHoff equation; model dependent thermodynamics;

D O I：

10.1073/pnas.93.15.7452

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The change in free energy with temperature at constant pressure of a chemical reaction is determined by the sum (dS) of changes in entropy of the system of reagents, dS(i), and the additional entropy change of the surroundings, dS(H), that results from the enthalpy change, dH. A faulty identification of the total entropy change on reaction with dS(i) has been responsible for the attribution of general validity to the expressions (d Delta G/dT)(P) = -Delta S-i and d(Delta G/T)/d(1/T) = Delta H, which are found in most textbooks and in innumerable papers.

引用

页码：7452 / 7453

页数：2

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[2]

GIBBS JW, 1993, SCI PAPERS, V1, P56

[3]

LAUFFER M, 1975, ENTROPY DRIVEN REACT

[4]

PLANCK M, 1922, TREATISE THERMODYNAM, P103