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A system undergo a state change from 1 to 2, according to second law of thermodynamics for the process to be feasible, the entropy change (S2 - S1) of the system
- a)is positive or zero
- b)is negative or zero
- c)is zero
- d)can be positive, negative or zer
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A system undergo a state change from 1 to 2, according to second law o...
Second Law of Thermodynamics:
The second law of thermodynamics states that the entropy of an isolated system always increases or remains constant over time. It provides a direction for the flow of heat and determines the feasibility or possibility of a particular process.
State Change from 1 to 2:
When a system undergoes a state change from state 1 to state 2, the entropy change (S2 - S1) of the system can be positive, negative, or zero. Let's understand each case:
Case 1: Positive Entropy Change (S2 - S1 > 0):
If the entropy of the system increases from state 1 to state 2, it means that the system becomes more disordered or has more microstates available in state 2 compared to state 1. In this case, the process is feasible and consistent with the second law of thermodynamics.
Case 2: Negative Entropy Change (S2 - S1 < />
If the entropy of the system decreases from state 1 to state 2, it means that the system becomes more ordered or has fewer microstates available in state 2 compared to state 1. In this case, the process is not feasible and violates the second law of thermodynamics.
Case 3: Zero Entropy Change (S2 - S1 = 0):
If the entropy of the system remains constant from state 1 to state 2, it means that the system neither becomes more ordered nor more disordered. In this case, the process is feasible, but it does not result in any increase or decrease in entropy.
Feasibility of the Process:
Based on the above cases, we can conclude that for the process to be feasible, the entropy change (S2 - S1) of the system can be positive, negative, or zero. The second law of thermodynamics allows for all these possibilities, depending on the specific conditions and constraints of the system.
In summary, the feasibility of a process depends on the change in entropy of the system. The entropy change can be positive, negative, or zero, and the second law of thermodynamics allows for all these cases.
The second law of thermodynamics states that the entropy of an isolated system always increases or remains constant over time. It provides a direction for the flow of heat and determines the feasibility or possibility of a particular process.
State Change from 1 to 2:
When a system undergoes a state change from state 1 to state 2, the entropy change (S2 - S1) of the system can be positive, negative, or zero. Let's understand each case:
Case 1: Positive Entropy Change (S2 - S1 > 0):
If the entropy of the system increases from state 1 to state 2, it means that the system becomes more disordered or has more microstates available in state 2 compared to state 1. In this case, the process is feasible and consistent with the second law of thermodynamics.
Case 2: Negative Entropy Change (S2 - S1 < />
If the entropy of the system decreases from state 1 to state 2, it means that the system becomes more ordered or has fewer microstates available in state 2 compared to state 1. In this case, the process is not feasible and violates the second law of thermodynamics.
Case 3: Zero Entropy Change (S2 - S1 = 0):
If the entropy of the system remains constant from state 1 to state 2, it means that the system neither becomes more ordered nor more disordered. In this case, the process is feasible, but it does not result in any increase or decrease in entropy.
Feasibility of the Process:
Based on the above cases, we can conclude that for the process to be feasible, the entropy change (S2 - S1) of the system can be positive, negative, or zero. The second law of thermodynamics allows for all these possibilities, depending on the specific conditions and constraints of the system.
In summary, the feasibility of a process depends on the change in entropy of the system. The entropy change can be positive, negative, or zero, and the second law of thermodynamics allows for all these cases.
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A system undergo a state change from 1 to 2, according to second law of thermodynamics for the process to be feasible, the entropy change (S2- S1) of the systema)is positive or zerob)is negative or zeroc)is zerod)can be positive, negative or zerCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A system undergo a state change from 1 to 2, according to second law of thermodynamics for the process to be feasible, the entropy change (S2- S1) of the systema)is positive or zerob)is negative or zeroc)is zerod)can be positive, negative or zerCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A system undergo a state change from 1 to 2, according to second law of thermodynamics for the process to be feasible, the entropy change (S2- S1) of the systema)is positive or zerob)is negative or zeroc)is zerod)can be positive, negative or zerCorrect answer is option 'D'. Can you explain this answer?.
A system undergo a state change from 1 to 2, according to second law of thermodynamics for the process to be feasible, the entropy change (S2- S1) of the systema)is positive or zerob)is negative or zeroc)is zerod)can be positive, negative or zerCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A system undergo a state change from 1 to 2, according to second law of thermodynamics for the process to be feasible, the entropy change (S2- S1) of the systema)is positive or zerob)is negative or zeroc)is zerod)can be positive, negative or zerCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A system undergo a state change from 1 to 2, according to second law of thermodynamics for the process to be feasible, the entropy change (S2- S1) of the systema)is positive or zerob)is negative or zeroc)is zerod)can be positive, negative or zerCorrect answer is option 'D'. Can you explain this answer?.
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