Why entropy change for a reversible adiabatic process is zero 2024?
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Carter Kim
Works at the International Organization for Migration, Lives in Geneva, Switzerland.
As an expert in thermodynamics, I can provide a detailed explanation of why the entropy change for a reversible adiabatic process is zero. Entropy is a measure of the disorder or randomness within a system. In thermodynamics, the concept of entropy is central to the second law of thermodynamics, which states that the total entropy of an isolated system can only increase over time for irreversible processes.
However, in a reversible process, the system can be returned to its initial state without any net change in the entropy of the universe. This is because a reversible process is an idealized process that occurs infinitely slowly, allowing the system to be in equilibrium at all times with its surroundings.
In an adiabatic process, there is no heat transfer between the system and its surroundings. The first law of thermodynamics, which states the conservation of energy, still applies, meaning that the change in internal energy of the system is equal to the work done on or by the system. Since there is no heat exchange, all the energy change is accounted for by work.
Combining these concepts, in a reversible adiabatic process, the system undergoes a change in state without any exchange of heat, and the process is carried out in such a way that the system remains infinitesimally close to equilibrium at every step. This means that the system is always in a state of maximum entropy for the conditions it is in, and thus, there is no entropy production within the system itself.
The key to understanding the entropy change being zero in a reversible adiabatic process lies in the nature of reversibility and the absence of entropy production mechanisms. The process is carried out so slowly that the system passes through a continuous series of equilibrium states, and there is no opportunity for entropy to increase or decrease. It's also important to note that the reversibility of the process implies that the system's state can be traced back to its original state without any net change in the universe's entropy.
Now, to translate the provided reference content into a more comprehensive explanation:
The concept of zero entropy change in a reversible adiabatic process is tied to the meticulous control over the process conditions. The process must be conducted with extreme care, such as moving a piston very slowly to compress or expand a gas. This slow movement ensures that the system remains in equilibrium at all times, which is a requirement for reversibility. The absence of heat transfer, a hallmark of adiabatic processes, means that the only energy exchange is through work done on or by the system. Since the process is reversible, the work done can be exactly reversed, and thus, the entropy of the system—and by extension, the universe—remains unchanged.
This understanding is crucial for grasping the fundamental principles of thermodynamics and the behavior of systems under various process conditions.
However, in a reversible process, the system can be returned to its initial state without any net change in the entropy of the universe. This is because a reversible process is an idealized process that occurs infinitely slowly, allowing the system to be in equilibrium at all times with its surroundings.
In an adiabatic process, there is no heat transfer between the system and its surroundings. The first law of thermodynamics, which states the conservation of energy, still applies, meaning that the change in internal energy of the system is equal to the work done on or by the system. Since there is no heat exchange, all the energy change is accounted for by work.
Combining these concepts, in a reversible adiabatic process, the system undergoes a change in state without any exchange of heat, and the process is carried out in such a way that the system remains infinitesimally close to equilibrium at every step. This means that the system is always in a state of maximum entropy for the conditions it is in, and thus, there is no entropy production within the system itself.
The key to understanding the entropy change being zero in a reversible adiabatic process lies in the nature of reversibility and the absence of entropy production mechanisms. The process is carried out so slowly that the system passes through a continuous series of equilibrium states, and there is no opportunity for entropy to increase or decrease. It's also important to note that the reversibility of the process implies that the system's state can be traced back to its original state without any net change in the universe's entropy.
Now, to translate the provided reference content into a more comprehensive explanation:
The concept of zero entropy change in a reversible adiabatic process is tied to the meticulous control over the process conditions. The process must be conducted with extreme care, such as moving a piston very slowly to compress or expand a gas. This slow movement ensures that the system remains in equilibrium at all times, which is a requirement for reversibility. The absence of heat transfer, a hallmark of adiabatic processes, means that the only energy exchange is through work done on or by the system. Since the process is reversible, the work done can be exactly reversed, and thus, the entropy of the system—and by extension, the universe—remains unchanged.
This understanding is crucial for grasping the fundamental principles of thermodynamics and the behavior of systems under various process conditions.
2024-06-16 19:05:35
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Works at the International Committee of the Red Cross, Lives in Geneva, Switzerland.
Zero, Entropy transfer in reversible process takes place either by heat interaction or by mass interaction. ... In order to make it reversible The piston need to be moved in a very very slow manner. So a piston compressing gases negligibly slow is called reversible adiabatic process.
2023-06-11 03:11:52
Oliver Rivera
QuesHub.com delivers expert answers and knowledge to you.
Zero, Entropy transfer in reversible process takes place either by heat interaction or by mass interaction. ... In order to make it reversible The piston need to be moved in a very very slow manner. So a piston compressing gases negligibly slow is called reversible adiabatic process.
