The amount of reactants consumption in unit reaction time
Reference: Chemical Process Safety – Fundamentals with Applications, 2nd Ed., Daniel A. Crowl/Joseph F. Louvar
The rate at which the conversion of reactants takes place. The rate of reaction is a function of concentrations and the reaction rate constant. The heat (q) produced by a reaction is a linear function of the rate of reaction, which makes the rate of reaction a basic parameter in determining the required cooling capacity during all stages of the reaction process.
Reference: S2S (safety to safety website: HarsNet, HarsBook, A technical guide for the assessment of highly reactive chemical systems, DECHEMA e.V., Frankfurt, 2002.)