The internal energy change when a system goes from state to is 40 kJ/mole. If the system goes from to by a reversible path and returns to state by an irreversible path what would be the net change in internal energy?
40 kJ
> 40 kJ
< 40 kJ
zero.
As we learnt in
Lavasier and Laplce's Law -
Enthalpy of decomposition of a compound is numerically equal to the formation of that compound and only sign changes.
- wherein
For a cyclic process the net change in the internal energy is zero because the change in internal energy does not depend on path.
Option 1)
40 kJ
this is incorrect option
Option 2)
> 40 kJ
this is incorrect option
Option 3)
< 40 kJ
this is incorrect option
Option 4)
zero.
this is correct option
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