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Internal energy change when system goes from state A to B is 40 KJ/mol. If the system goes from A to B by reversible path and returns to state A by irreversible path, what would be net change in internal energy ?
  • a)
    40 KJ
  • b)
    > 40 KJ
  • c)
    < 40 KJ
  • d)
    zero
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Internal energy change when system goes from state A to B is 40 KJ/mol...
The net change in internal energy of a system undergoing a cyclic process is zero. This is because the system returns to its initial state, and therefore its internal energy must also return to its initial value.

So, in this case, the net change in internal energy would be zero, regardless of whether the return path is reversible or irreversible.

Therefore, the answer is:

b) 0 KJ
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Community Answer
Internal energy change when system goes from state A to B is 40 KJ/mol...
Answer d is correct becoz when system return 2 same path then internal energy not changes remain same
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Internal energy change when system goes from state A to B is 40 KJ/mol. If the system goes from A to B by reversible path and returns to state A by irreversible path, what would be net change in internal energy ?a)40 KJb)> 40 KJc)< 40 KJd)zeroCorrect answer is option 'D'. Can you explain this answer?
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