Time variation of entropy production in simultaneous chemical reactions

Example 8.11 Time variation of entropy production in simultaneous chemical reactions Consider two simultaneous reactions and derive relations for the time variation of the entropy production. Assuming that linear laws hold for a two-reaction system, we have 

If Onsager s reciprocal rules hold, the rate of entropy production for two simultaneous chemical reactions is 

We also assume that the phenomenological coefficients are constant. The time variation of the entropy production is 

Using the linear laws of Eqs. (8.216) and (8.217) in the equation above, we have 

For a closed system, the affinities. 1, and.F are expressed in terms of P and T. which are kept constant, and the extent of reactions and e2, and we have 

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Example 8.9 Time variation of entropy production in simultaneous chemical reactions... 

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