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Complete segregation and maximum mixedness are

  • A.two different residence time distributions
  • B.two names for one and the same condition
  • C.properties of the reaction, not the flow
  • D.the two limits of micromixing

Answer: D

Correct answer: the two limits of micromixing

They are the two extremes of how fluid elements of different ages mix. Complete segregation treats each element as a little batch reactor that never exchanges material, mixing only at the exit; maximum mixedness has elements mix with all others of the same remaining life as early as possible. Real reactors lie between them, and the two calculations therefore bracket the achievable conversion.

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