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Discussion :: Chemical Engineering Thermodynamics

  1. In an isothermal process on an ideal gas, the pressure increases by 0.5 percent. The volume decreases by about __________ percent.

    2. A.

     0.25
    B.

     0.5
    C.

     0.75
    D.

     1

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    Answer : Option B

    Explanation :

    In an isothermal process as we PV=constant
    ⇒ on applying log we get logP+logV=logConstant      on differentiating we get dPP+dVV=0,
    So, dVV∗100=−dpp∗100     given the pressure has a percentage increase of 0.5
    So, the volume will have a percentage decrease of 0.5.

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