How is heat included in the equation of an exothermic reactor?

In the equation of an exothermic reactor, heat is typically represented as a product of the reaction. This means that during the chemical reaction, energy is released in the form of heat, which can be included in the reaction's enthalpy change (ΔH) as a negative value. For example, the reaction can be expressed as ( A + B \rightarrow C + D + \text{heat} ), indicating that heat is generated alongside the formation of products. This heat release can influence the reactor's temperature and overall system behavior.