IIT JAM
Shweta thakur Asked a Question
May 25, 2020 7:32 pmpts 30 pts
  • IIT JAM
  • Chemistry (CY)

Sir in reversible compression the work done is positive or negative

sir in reversible compression the work done is positive or negative
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  • Dinesh khalmaniya thankyou
    the system is compressed, then the work is positive and the internal energy of the system increases. Conversely, if the system expands, it does work on the surroundings and the int...
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  • Suman Kumar
    Sweta did you get?
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    Shweta thakur
    yes
  • Suman Kumar thankyou
    In chemistry we are interested in internal energy of the system. So anything that increases the internal energy of the system is taken as positive. Compression is the work done on ...
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    Suman Kumar
    But in Physics we are interested in work done by the system as we have to extract work from machine. So work done by the system is positive i.e expansion is taken as negative.
  • Suresh khokhar Best Answer
    all compression work is positive. an expansion work is negative.
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