Seite - (000015) - in Advanced Chemical Kinetics

Chapter 1 Complex Reactions and Dynamics Muhammad Shahzad and Faisal Sultan Additional information is available at the end of the chapter http://dx.doi.org/10.5772/intechopen.70502 Provisionalchapter ComplexReactionsandDynamics MuhammadShahzadandFaisal Sultan Additional information isavailableat theendof thechapter Abstract Starting from the general idea of reaction kinetics, their classification, concentrations, and chemical equilibrium, we will focus on their activation energy and complexity arising during the chemical reaction. As in complex and higher-dimensional chemical problems,weneedspecial arrangements, specifically, in the casewhenasystemattains different completionpathsor several routes.Thestiffnessof thesystemcanberemoved ifwedistinctlymeasure their available reaction routes and get a comparison between themandoverall reactions. Secondly, the construction andcomparisonof the invariant region of the manifold based on the modern decomposition techniques in different available reactionroutesallowus todiscuss thedynamicalpropertiesof thesystem. Keywords: chemicalequilibrium,detailedmechanism,modelreduction,reactionroutes, invariantmanifold 1. Introduction The chemical kinetics or reaction kinetics is the branch of physical chemistry that dealswith the study of chemical processes, their rates, rearrangement of atoms, the effect of various variables, the formation of intermediates, etc. In fact, the chemical kinetics is the study of different factors affecting the speed of a chemical process and gives information about the mechanism of reaction and transition states. At themacroscopic level, the chemical kinetics dealswith the studyofamount reacted, formed,and the ratesof their formation.Whileat the microscopic ormolecular level, we study themechanism of a chemical reaction, i.e., atomic collision, activationenergyatdifferent stagesduring the reaction. Thechemicalkinetics isclassifiedintothreetypes,mathematical,detailed,andappliedkinetics, while their elementary reactionsaredescribedasunimolecular, bimolecular, and termolecular reactions. © TheAuthor(s). Licensee InTech.This chapter isdistributedunder thetermsof theCreativeCommons AttributionLicense (http://creativecommons.org/licenses/by/3.0),whichpermitsunrestricteduse, distribution, andeproduction inanymedium,providedtheoriginalwork isproperlycited. DOI:10.5772/intechopen.70502 © 2018 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.