Discussion about the Definition of Reaction Molecularity
Wenjuan RUAN,Zhiang ZHU. Discussion about the Definition of Reaction Molecularity[J]. University Chemistry, 2018, 33(12): 96-99. DOI: 10.3866/PKU.DXHX201803035
College of Chemistry, Nankai University, Tianjin 300071, P. R. China
Abstract:
There are two different views on the definition of reaction molecularity in physical chemistry textbooks and related literatures so far. We give a deep discussion about this conception herein. Starting with the development of chemical kinetics and the definition of elementary reaction and state-state reaction, we clarify that elementary reaction and state-state reaction are the conceptions belonging to macro-and micro-systems, respectively, and reaction molecularity is also belonging to micro-conception. Based on this conclusion, we think that the more reasonable definition of reaction molecularity should be "the number of chemical particles that take part in a state-state reaction (or an elementary chemi-physical reaction) as a reactant".
