Kinetics Quiz 3 Study Set with 100% correct answers

Kinetics Quiz 3 Study SetAs the relative costs of the reactor increase, which of the following are generally expected to be true for positive order reactions? a. The reactor volume will need to be larger b. Higher conversions will generally be optimal c. A CSTR will be desirable over a PFR d. Lower conversions will generally be optimal e. None of the above - correct answer d. Lower conversions will generally be optimal If reactor costs are relatively expensive as compared to the other costs such as the reactants, then you want to minimize those reactor costs by having a relatively small reactor - which will led to lower conversion, sacrificing some unreacted components for a somewhat smaller reactor. If separation of the product from the reactant is the largest cost for a positive order reaction, then relatively what reactor size will be desired a. small b. medium c. large - correct answer c. large If separation costs are the highest, then you don't want to have much in the way of reactants left - so you want a large conversion, and therefore a large reactor. The reactant costs do not depend on the size of the reactor a. True b. False - correct answer a. True All of the examples we have worked, your reactant costs are in the inlet flowrate of A times the cost per mole of A - both of which are generally fixed and do not depend in any way on the reactor size. For an otherwise ideal CSTR that is in the process of being started up, which of the following terms are equal to zero in the overall mass balance? a. in