Page 139 - Elements of Chemical Reaction Engineering 3rd Edition
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Chap. 3 Summary 111
SUMMARY
1. Reaction order is determined from experim.enta1 observation:
A+B ---+C (S3-1)
The reaction in Equation (S3-1) is a order with respect to species A
and p order with respect to species B, whereas the overall order is
a + p. Reaction order is determined from experimental observation. If
ci = 1 and p = 2, we would say that the reaction is first-order with
respect to A, second-order with respect to IB, and overall third-order.
2. In addition to the reaction order, the following terms were defined:
a, Elementary reaction
b. Reversible and irreversible reactions
c. Homogeneous and heterogeneous reactions
3. The temperature dependence of a specific reaction rate is given by the
Arrhenius equation,
k = Ae-wRT (213-2)
where A is the frequency factor and E the activation energy.
4.. The stoichiometric table for the reaction
b C d
A+ - B ------+ -C+-D (S2-2)
a a a
being carried out in a flow system is:
~
Species Entering Change Leaving
A FAO -FAOX FAO(1 - x)
FAO (..$
B FBO - 1) FAOX
[:)
C Fco FAOX (0" + .)
FAO (@D + .)
DI FDO 1) FAOX
60
I - - FIO
Fro F= F, + 6FA0X
d
c
where 6 = a+;-;-' b