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The height of a transfer unit in an absorption tower expresses

  • A.Height for one unit of concentration change
  • B.The total tower height required
  • C.The pressure drop per unit height
  • D.The liquid flow per unit area

Answer: A

Multiplying it by the number of transfer units gives the packed height required, which separates the equipment's efficiency from the separation's difficulty. A more efficient packing shortens the tower without changing the number of units needed.

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