{"term":{"id":"05141","title":"rate law","longtitle":"IUPAC Gold Book - rate law","doi":"10.1351\/goldbook.R05141","code":"R05141","status":"current","synonym":"<em>synonym<\/em>: empirical differential rate equation","definitions":[{"id":1,"text":"An expression for the rate of reaction of a particular reaction in terms of concentrations of chemical species and constant parameters (normally rate coefficients and partial orders of reaction) only. For examples of rate laws see equations (1)-(3) under kinetic equivalence, and (1) under steady state.","links":[{"term":"chemical species","url":"https:\/\/goldbook.iupac.org\/terms\/view\/CT01038"},{"term":"kinetic equivalence","url":"https:\/\/goldbook.iupac.org\/terms\/view\/K03403"},{"term":"orders of reaction","url":"https:\/\/goldbook.iupac.org\/terms\/view\/O04322"},{"term":"rate coefficients","url":"https:\/\/goldbook.iupac.org\/terms\/view\/R05137"},{"term":"rate of reaction","url":"https:\/\/goldbook.iupac.org\/terms\/view\/R05156"},{"term":"steady state","url":"https:\/\/goldbook.iupac.org\/terms\/view\/S05962"}],"sources":["PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1157 (https:\/\/doi.org\/10.1351\/pac199466051077)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/R05141\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/R05141\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/R05141\/plain"},"citation":"Citation: 'rate law' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351\/goldbook.R05141","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-06-14T14:32:16+00:00"}}