Question

What is a reversile process? What are its features?

Answer 1

A thermodynamic process is reversible if the process can return back in such a that both the system and the surroundings return to their original states, with no other change anywhere else in the universe. It means both system and surroundings are returned to their initial states at the end of the reverse process.


Reversible processes are idealizations or models of real processes. One familiar and widely used example is Bernoulli's equation, which you saw in Unified. They are extremely useful for defining limits to system or device behavior, for enabling identification of areas in which inefficiencies occur, and in giving targets for design.

An important feature of a reversible process is that, depending on the process, it represents the maximum work that can be extracted in going from one state to another, or the minimum work that is needed to create the state change.


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Answer 2

Explanation:

I have a formula for finding the final temperature in an irreversible adiabatic expansion.

T2=⎡⎣Cv+(P2P1)Cp⎤⎦T1

where T1 is the initial temperature. Cv and Cp are the molar heat capacities at constant volume and constant pressure respectively.

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