Which of the following assumes constant molal vaporisation and overflow ?

Correct answer: C. McCabe-Thiele method

  • A. Enthalpy concentration method
  • B. Ponchan-Savarit method
  • C. McCabe-Thiele method
  • D. Plate absorption column

Explanation

The McCabe-Thiele method uses the constant-molal-overflow assumption, allowing straight operating lines to be drawn on the x-y diagram. The Ponchon-Savarit method instead accounts for enthalpy changes directly.

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