|Statement||Stefan G. Christov.|
|Series||Lecture notes in chemistry -- 18|
Collision theory and statistical theory of chemical reactions. [St G Khristov] Home. WorldCat Home About WorldCat Help. Search. Search for Library Items Search for Lists Search for Contacts Search for a Library. Create Collision Theory Treatment.- Statistical Theory Treatment.- 5. Adiabatic Statistical Theory of Reaction Rates.- Get this from a library! Collision Theory and Statistical Theory of Chemical Reactions. [Stefan G Christov] -- Since the discovery of quantum mechanics, more than fifty years ago, the theory of chemical reactivity has taken the first steps of its development. The knowledge of the electronic structure and the. Collision theory is a quantitative theoretical construct for modeling the dynamics of a chemical reaction, based on principles of statistical mechanics and chemical energetics. The theory predicts the rate at which a chemical reaction may occur. Collision theory led to the theory of reaction cross sections which is highly successful, and in principle exact, for low pressure gas phase reactions. Author: Baron Peters.
Atoms must be close together to form chemical bonds. This simple premise is the basis for a very powerful theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates. Collision theory is based on the following postulates: The rate of a reaction is proportional to the rate of reactant collisions. Collision theory proposes that not all reactants that combine undergo a reaction. However, assuming the stipulations of the collision theory are met and a successful collision occurs between the molecules, transition state theory allows one of two outcomes: a return to the reactants, or a rearranging of bonds to form the products. Abstract. This chapter is an introduction to statistical approximation in the theory of reactive collisions. The theme of the chapter is the transition state,* and the statistics in statistical theory is in essence just the counting of the various ways a system can pass through a transition by: The book discusses collision theory, transition state theory, RRKM theory, catalysis, diffusion limited kinetics, mean first passage times, Kramers theory, Grote-Hynes theory, transition path theory, non-adiabatic reactions, electron transfer, and topics from reaction network analysis.
One approach is the collision theory of chemical reactions, developed by Max Trautz and William Lewis in the years – In this theory, molecules are supposed to react if they collide with a relative kinetic energy along their line of centers that exceeds E a. Chemical reactions typically require collisions between reactant species. These reactant collisions must be of proper orientation and sufficient energy in order to result in product formation. Collision theory provides a simple but effective explanation for the effect of many experimental parameters on reaction rates. Transition state theory (TST) explains the reaction rates of elementary chemical theory assumes a special type of chemical equilibrium (quasi-equilibrium) between reactants and activated transition state complexes.. TST is used primarily to understand qualitatively how chemical reactions take place. For reactions involving large molecules, this often leads to a sizeable discrepancy between simple collision theory and experiment, though this is partly corrected for by the inclusion of the steric factor, P. This shortcoming is addressed in another model, known as transition-state theory, which is based on principles of statistical mechanics.