JCE Online Journal of Chemical Education
 | Subscriptions  | Software Orders  | Support  | Contributors  | Advertisers  | 

JCE Print
   Current Issue
 Previous Issues
 Supplements
 Search JCE Index

JCE Digital Library
   DigiDemos
 QBank
 SymMath
 WebWare

JCE Software
   Latest Releases
 Software & Video
 Downloads
 Support

Only@JCE Online
   JCE Online Store
 JCE HS CLIC
 JCE Discussion Forums
   Biographical Snapshots
 ChemEd Resource Shelf
 Featured Molecules
 Hal's Picks
 Project Chemlab
 Reviewed WWW Sites
 "Web-Ed" Articles

About JCE
   Features
 Publications
 Operations
 Outreach
 Contact Us


  Home > JCE Print > Journal of Chemical Education > Issues > 1998  > February  >
Research: Science and Education
How Does the Gibbs Free Energy Evolve in a System Undergoing Coupled Competitive Reactions?
Ludovic Jullien, Anna Proust, and Jean-Christophe Le Menn
Ecole Normale Supérieure, Département de Chimie, 24, rue Lhomond, Paris Cedex 05 F-75231, FRANCE
Cover
February 1998
Vol. 75 No. 2
p. 194
Abstract
The kinetic and thermodynamic behavior of a chemical system undergoing coupled competitive reactions is analyzed. It is illustrated by considering the hydrogenation reaction of a Vaska type complex. In a first part, the meaning of kinetic/thermodynamic controls and of kinetic stability is thoroughly revisited. The different regimes are defined by reference to the characteristic times emerging from equations describing the evolution. In a second part, it is shown how the Gibbs free energy of the reacting system varies when successively submitted to kinetic and thermodynamic controls.
More Information
*  Citation
 Jullien, Ludovic; Proust, Anna; Le Menn, Jean-Christophe. J. Chem. Educ. 1998 75 194.
*  Keywords
 Physical Chemistry, Equilibrium, Mechanisms, Physical Organic, and Thermodynamics
*  History
 Created:
Last Updated:		 June 28, 1999
June 23, 2005
<< Previous Article Table of Contents Next Article >>
  Home > JCE Print > Journal of Chemical Education > Issues > 1998 > February > Page 194


Subscriptions
 Subscription Info
 Order Forms

JCE HS CLIC

Our Secondary School editors work hard to distill all the JCE materials to produce a fraction of particular interest to high school teachers. We call it CLIC.
 JCE HS CLIC

Contributions Welcome
JCE welcomes your submission
 Contributors' Corner

Advertisers
In recent years we have worked hard to better match our advertisers with our readers. When shopping for chemistry education materials, visit our advertisers' WWW sites first.
 Recent Advertisers

Be An Ambassador
Take JCE along on your outreach missions. Copies of the Journal, guest access to JCE Online, our publications catalog, and more are available for your participants.
 Outreach with JCE

Comments to
jceonline@chem.wisc.edu		 Copyright © Division of Chemical Education, Inc., American Chemical Society.
All rights reserved.