IIT JAM
Shweta thakur Asked a Question
May 30, 2020 5:45 pmpts 30 pts
  • IIT JAM
  • Chemistry (CY)

Infinite free expansion and finite free expansion plz explain by this data

Irreversibl e Work done Infinite free expansion Finite free expansion AT=0, AE =0 Pet = 0 P, #0, W =0, Q=0, AH - 0, PV =PV2 AT -0,AE =0 P 0. ext P 0, W =0, Q-0, AH =0.PV= P,V2 = -PextAV = -P, AV Where V, o Where V, =
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  • Suman Kumar
    Sweta did you understand this?
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  • Suman Kumar
    Remember work is always done against Pext and if Pext is not given then P2 is taken.
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  • Suman Kumar
    Infinite free expansion simply means vaccum.
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  • Suman Kumar
    P1 and P2 is the pressure of the system before and after while Pext is the pressure of the surrounding. In finite process it is P2 which is non zero meaning Pressure of the system ...
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    Suman Kumar
    As there is non zero pressure for finite process it can't expand to infinite volume as pressure holds it
  • Shweta thakur
    and sir infinite expansion means there is no opposing pressure means pressure is constant
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  • Shweta thakur
    ok sir
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    Suman Kumar
    Finite free expansion: it is clearly mentioned Pext =0
  • Suresh khokhar thankyou
    finite free expansion mean after expansion there will be some external pressure present .
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