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Thermodynamics filled in class notes_Part_118

Thermodynamics filled in class notes_Part_118 - 243 7.1...

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7.1. ISOTHERMAL, ISOCHORIC KINETICS 243 7.1.1.2 Single reversible reaction The two irreversible reactions studied in the previous section are of a class that is common in combustion modeling. However, the model suFers a defect in that its link to classical equilibrium thermodynamics is missing. A better way to model essentially the same physics and guarantee consistency with classical equilibrium thermodynamics is to model the process as a single reversible reaction, with a suitably modi±ed reaction rate term. 7.1.1.2.1 Mathematical model 7.1.1.2.1.1 Kinetics ²or the reversible O O 2 reaction, let us only consider reaction 13 from Table 7.2 for which 13 : O 2 + M O + O + M. (7.100) ²or this system, we have N = 2 molecular species in L = 1 elements reacting in J = 1 reaction. Here a 13 = 1 . 85 × 10 11 p mole cm 3 P 1 ( K ) 0 . 5 , β 13 = 0 . 5 , E 13 = 95560 cal mole . (7.101) Units of cal are common in chemistry, but we need to convert to erg , which is achieved via E 13 = p 95560 cal mole Pp 4 . 186 J cal 10 7 erg J P = 4 . 00014 × 10 12 erg mole . (7.102)
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Thermodynamics filled in class notes_Part_118 - 243 7.1...

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