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Dibya Ranjan Panda posted an Question
June 12, 2020 • 22:03 pm
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30 points
30 points
- IIT JAM
- Chemistry (CY)
What is the difference between reversible and irreversible isothermal and adiabatic processes?
what is the difference between reversible and irreversible isothermal and adiabatic processes?
3 Answer(s)
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Suman Kumar Best Answer
For more information, you can also watch the below video....https://youtu.be/nmmth0SEVLk
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Dibya ranjan panda
why in a isothermal expansion change in internal energy is zero?
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For ideal gas it is zero.
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Because internal energy is a function of temperature for ideal gas. This ca be derived from ist law of thermodynamics
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thank you
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For real internal energy is not zero. Because internal energy is function of volume & temperature for real gas
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ok sir
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Suman Kumar
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Irreversible processes are real-life processes, which can not be completely reversed back, & is always accompanied by some loss of heat, work or energy. Why do we study reversible processes? So that we can optimize the efficiency of irreversible processes. By theoretically studying how an ideal gas would behave when combusted in an IC engine with fuel, & how much max efficiency would be obtained, we can find some ways for real air-fuel mixture to behave in the same way to reach the efficiency as close to ideal gas as possible.
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Suman Kumar
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REVERSIBLE processes are those which can be reversed back to the intial state, following the same path that it took to reach the final state, in reverse order. For eg: when a piece of paper is put on fire, it burns produces flame & heat & turn to ash. If the same ash can somehow be reversed back to the paper, following all the steps in reverse…i.e…the ash turns to burn paper then turn back to the paper in the same condition as it was before, then this would be called a reversible process. As it would be clear by now, Reversible processes do not occur in real life. An ideal gas is used to study reversible processes.
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Dibya ranjan panda
thank u sir