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Chemical Reaction Engineering Asynchronous Video Series Chapter 3, Part 2: Reaction Stoichiometry: Batch H. Scott Fogler, Ph.D. Why Stoichiometry? • If we have FA 0 rA X • Then we can size a number of CSTR and PFR reaction systems • To find -rA= f(X) 1) Need the rate law, -rA=f(CA, CB) 2) Need the reaction stoichiometry, CA=CA0(1-X) [Liquid Phase] !! Batch Stoichiometric Table Species Symbol A Initial Change Remaining A ________ ____________ Batch Stoichiometric Table Species Symbol A A B B Initial B Change Remaining N B0 N A0 ________ ____________ Batch Stoichiometric Table Species Symbol A A B B C C Initial B Change Remaining N B0 N A0 ________ ____________ Batch Stoichiometric Table Species Symbol A A B B C C D D Initial B Change Remaining N B0 N A0 ________ ____________ Batch Stoichiometric Table Species Symbol A A B B C C D D Inert I Initial B Change Remaining N B0 N A0 ------________ ____________ Batch Stoichiometric Table Species Symbol A A B B C C D D Inert I Initial B Change Remaining N B0 N A0 ------________ ____________ Batch Stoichiometric Table Species Symbol A A B B C C D D Inert I Initial B Change N B0 N A0 ------____________ ________ where Remaining and Concentration: Batch Systems Constant Volume Batch: Concentration: Batch Systems Constant Volume Batch: Note: if the reaction occurs in the liquid phase or if a gas phase reaction occurs in a rigid (e.g., steel) batch reactor Then Concentration: Batch Systems Constant Volume Batch: Note: if the reaction occurs in the liquid phase or if a gas phase reaction occurs in a rigid (e.g., steel) batch reactor Then etc. Concentration: Batch Systems Constant Volume Batch: Note: if the reaction occurs in the liquid phase or if a gas phase reaction occurs in a rigid (e.g., steel) batch reactor Then etc. If And we have –rA=f(X) then