mass action rate law for irreversible reactions mass action rate law for irreversible reactions, continuous scheme Reaction scheme where the products are created from the reactants and the change of a product quantity is proportional to the product of reactant activities. The reaction scheme does not include any reverse process that creates the reactants from the products. It is to be used in a reaction modelled using a continuous framework. <n0:math xmlns:n0="http://www.w3.org/1998/Math/MathML"> <n2:semantics xmlns:n2="http://biomodels.net/SBO/" definitionURL="http://biomodels.net/SBO/#SBO:0000062"> <n2:lambda> <n2:bvar><n2:ci definitionURL="http://biomodels.net/SBO/#SBO:0000154">k</n2:ci></n2:bvar> <n2:bvar><n2:ci definitionURL="http://biomodels.net/SBO/#SBO:0000157">n</n2:ci></n2:bvar> <n2:bvar><n2:ci definitionURL="http://biomodels.net/SBO/#SBO:0000158">mu</n2:ci></n2:bvar> <n2:bvar><n2:ci definitionURL="http://biomodels.net/SBO/#SBO:0000509">R</n2:ci></n2:bvar> <n2:apply> <n2:times /> <n2:ci>k</n2:ci> <n2:apply> <n2:product /> <n2:bvar><n2:ci> i </n2:ci></n2:bvar> <n2:lowlimit><n2:cn type="integer"> 0 </n2:cn></n2:lowlimit> <n2:uplimit><n2:ci> n </n2:ci></n2:uplimit> <n2:apply> <n2:power /> <n2:apply> <n2:selector /> <n2:ci type="vector">R</n2:ci> <n2:ci> i </n2:ci> </n2:apply> <n2:apply> <n2:selector /> <n2:ci type="vector">mu</n2:ci> <n2:ci> i </n2:ci> </n2:apply> </n2:apply> </n2:apply> </n2:apply> </n2:lambda> </n2:semantics> </n0:math>