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Chemical Engineering

University/Undergrad

Last updated 3:32 AM on 3/15/23
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33 Terms

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octave levenspiel
author of chemical reaction engineering
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H. Scott folger
author of elements of chemical reaction engineering
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unit operationns
engineering practice based on physical changes
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unit process
engineering practice based on chemical changes
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chemical reaction engineering
it's about reaction or chemical kinetics: rates of ==chemical== reactions & factors the rate
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chemical kinetics
the area of chemistry that is concerned with reaction rates and reaction mechanisms
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chemical reaction engineering
branch of Engineering that is concerned with the exploitation of chemical reactions on a commercial scale for certain purpose
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reaction rate
it is the speed at which a chemical reaction proceeds
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chemical treatment steps
the heart of a typical chemical process
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chemical species
any chemical element or compound with a given identity
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chemical species
it is determined by the kind, number and configuration of the atoms
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proof of a chemical reaction
A detectible number of molecules of one or more species have lost their identity and assumed a new form by a change in the kind or number of atoms in the compound and/or by a change in the structure or configuration of its atoms
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Decomposition
aA -> Products
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Combination
aA + bB -> products
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Isomerizarion
A -> A'
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Homogeneous
Only one phase present
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Heterogeneous
More than one phase present
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catalyzed and non-catalyzed
classifying reactions according to presence of catalyst
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elementary and non-elementary
classifying reactions according to mechanism
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elementary
single step
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non-elementary
presence of intermediates
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unimolecular reaction
a=1 ; b,c=0
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multimolecular
m= a+b+c
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mol/(volume)(time)
unit of ri
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Homogeneous Systems
ri = f(T,P,Ca,Cb)
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Heterogeneous Systems
ri = f(heat and mass transfer)
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disappearance of i
"-" in rate reaction means
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appearance of i
"+" in rate reaction means
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law of mass action
The rate of a chemical reaction is directly proportional to the active masses of the reactants each raised to a certain power.
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order of the reaction
in law of mass action power is referred to as the ____ with respect to the reactant
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rate constant
what is k
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elementary reactions
Reactions in which the rate equation corresponds to the stoichiometric equation.
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nonelementary reactions
When there is no direct correspondence between stoichiometry and rate.