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The property of working substance which increases or decreases as the heat is supplied orremoved in a reversible manner, is known as
- a)enthalpy
- b)internal energy
- c)entropy
- d)external energy
Correct answer is option 'C'. Can you explain this answer?
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The property of working substance which increases or decreases as the ...
Understanding Entropy in Thermodynamics
Entropy is a central concept in thermodynamics, particularly when discussing reversible processes. Here’s a detailed explanation of why entropy is the correct answer.
Definition of Entropy
- Entropy is a measure of the disorder or randomness in a system.
- It quantifies the amount of energy in a physical system that is not available to do work.
Reversible Processes
- In thermodynamics, a reversible process is an idealized process that happens infinitely slowly, allowing the system to remain in equilibrium.
- During these processes, the heat added or removed from a system leads to changes in its entropy.
Entropy Change During Heat Transfer
- When heat is added to a system in a reversible manner, the entropy of the system increases.
- Conversely, when heat is removed, the entropy of the system decreases.
- This relationship is crucial in determining the efficiency of thermodynamic cycles.
Significance of Entropy
- Entropy helps in predicting the direction of spontaneous processes.
- It indicates the feasibility of energy exchanges in systems, thereby playing a vital role in understanding and designing engines and refrigerators.
Conclusion
- In conclusion, entropy is the property of the working substance that changes as heat is supplied or removed in a reversible manner.
- This makes it a fundamental concept in the study of energy transformations and thermodynamic cycles.
Understanding entropy not only enhances comprehension of thermodynamic principles but also aids in practical applications in mechanical engineering.
Entropy is a central concept in thermodynamics, particularly when discussing reversible processes. Here’s a detailed explanation of why entropy is the correct answer.
Definition of Entropy
- Entropy is a measure of the disorder or randomness in a system.
- It quantifies the amount of energy in a physical system that is not available to do work.
Reversible Processes
- In thermodynamics, a reversible process is an idealized process that happens infinitely slowly, allowing the system to remain in equilibrium.
- During these processes, the heat added or removed from a system leads to changes in its entropy.
Entropy Change During Heat Transfer
- When heat is added to a system in a reversible manner, the entropy of the system increases.
- Conversely, when heat is removed, the entropy of the system decreases.
- This relationship is crucial in determining the efficiency of thermodynamic cycles.
Significance of Entropy
- Entropy helps in predicting the direction of spontaneous processes.
- It indicates the feasibility of energy exchanges in systems, thereby playing a vital role in understanding and designing engines and refrigerators.
Conclusion
- In conclusion, entropy is the property of the working substance that changes as heat is supplied or removed in a reversible manner.
- This makes it a fundamental concept in the study of energy transformations and thermodynamic cycles.
Understanding entropy not only enhances comprehension of thermodynamic principles but also aids in practical applications in mechanical engineering.
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The property of working substance which increases or decreases as the heat is supplied orremoved in a reversible manner, is known asa)enthalpyb)internal energyc)entropyd)external energyCorrect answer is option 'C'. Can you explain this answer?
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