I Reversible Process: Why is it Important?

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Reversible processes, also known as quasistatic processes, are important because they allow a system to remain in thermodynamic equilibrium, ensuring that all parameters are well-defined and measurable. The second law of thermodynamics helps quantify which processes can occur spontaneously, highlighting the significance of understanding both reversible and irreversible processes. A reversible process involves a closed system transitioning through a continuous sequence of equilibrium states, making it internally reversible. In contrast, any process that deviates from this definition is classified as irreversible. Understanding these concepts is crucial for thermodynamic analysis and efficiency optimization.
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Does this mean that in reversible process\ quasistatic process, the energy is not lost as heat and the process in which the energy is not lost as heat is known as reversible process\quasistatic process?

I want to know why we want to have reversible \ quasistatic process.
 

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Look at the sentence after the highlighted one.
 
mjc123 said:
Look at the sentence after the highlighted one.
I did that.
Yet,I have not understood why we want reversible process\quasistatic process?
Is it because in quasistatic process, the system remains in thermodynamic eqbm. and so the parameters defining the system are well defined and can be measured?
 
The second law of thermodynamics quantifies the kinds of processes that can and can't occur spontaneously. In order to provide this quantification (mathematically), we must first understand reversible and irreversible processes, and their definitions. If a closed system experiences a reversible process, it passes through a continuous sequence of thermodynamic equilibrium states. This can be used as the definition of an internally reversible process. Any process that does not satisfy this definition for the system is irreversible.
 

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