The next step is to integrate the information about thermodynamic of the RWGS reaction. At equilibrium of partial pressure of components, the rate of RWGS reaction must be equal to 0 and if the reaction product Π is more than 𝐾 𝑒𝑞 the rate must be negative. Finally, the trivial information that the rates must be equal to 0 at the absence of reagents is added (the rates should be zero if the partial pressure of involved reagents is zero). As summary, the rates can be presented as: where rate constants are defined by expression (3); Πthe reaction product of the RWGS that can be defined as: