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Discussion :: Chemical Engineering Thermodynamics

  1. Throttling (Joule-Thomson effect) process is a constant __________ process.

    2. A.

     Enthalpy
    B.

     Entropy
    C.

     Pressure
    D.

     None of these

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    Answer : Option A

    Explanation :

    Joule – thomson throttling process is an iso-enthalpic process since pressure change is done at constant enthalpy that means a pressure change will occur but a corresponding internal energy change also occurs and enthalpy remains constant.
    Since H=U+PV

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