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Question: A system changes from state X to Y with a change in internal energy measuring to 25 kJ \(mol^{- 1}\)...

A system changes from state X to Y with a change in internal energy measuring to 25 kJ mol−1mol^{- 1}, by a

reversible path and returns from Y to X by an irreversible path. What will be the net change in internal energy?

A

25 kJ

B

> 25 KJ

C

<25 kJ

D

Zero

Answer

Zero

Explanation

Solution

: For a cyclic process, net change in internal energy is zero. Change in internal energy does not depend on the path by which final stage is reached.