Home Chemistry Thermodynamics and Thermochemistry HARD The internal energy change when a system goe…
Chemistry Thermodynamics and Thermochemistry HARD Single Correct MCQ
Published on: August 13, 2026

The internal energy change when a system goes from state A to B is 40 kJ/mole . If the system goes from A to B by a reversible path and returns to state A by an irreversible path what would be the net change in internal energy

A
40 kJ
B
> 0 kJ
C
< 40 kJ
D
Zero

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The correct answer is:
D

.

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