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Discussion :: Chemical Engineering Thermodynamics

  1. In a P-V diagram (for an ideal gas), an isothermal curve will coincide withan adiabatic curve (through a point), when

    2. A.

     Cp < Cv
    B.

     Cp = Cv
    C.

     Cp > Cv
    D.

     Cp ≥ Cv

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    Answer : Option B

    Explanation :

    The slope of isothermal process in p−v  plane is dPdV=−PV
    The slope of adiabatic process in P−V  plane is dPdV=−γPV
    ⇒ Slopes become equal when γ=1

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