Entropy production for series of reactions at stationary state

Example 8.7 Entropy production for series of reactions at stationary state For the following series of reactions with an entering flow S and exiting flow P, determine the rate of entropy production 

If At RT for every elementary reaction, the system would be close to global equilibrium, and the linear reaction velocities become 

This fixed affinity A moves the system from equilibrium. For using a fixed value of A, a linear reaction velocity is expressed by 

The linear reaction velocity is valid for an overall chemical reaction when A/RT 1 for the elementary steps in the reaction and when concentrations do not change with time. If the overall reaction is not an elementary reaction, the relation J, =. /e [l-exp( A/RT)] is not valid. For reaction n, we have 

With this equation, the entropy production becomes 

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Example 8.5 Entropy production for series of reactions at stationary state... 

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