Discussion :: Chemical Engineering Thermodynamics
- The thermodynamic law, PVy = constant, is not applicable in case of
A.
Ideal compression of air |
B.
Free expansion of an ideal gas |
C.
Adiabatic expansion of steam in a turbine |
D.
Adiabatic compression of a perfect gas |
Answer : Option B
Explanation :
Since PVY= constant is valid only for reversible process but since as free expansion is irreversible because it is working on a cycle by taking heat from a single reservoir and producing net expansion work when considered reversible and thus violating Kelvin-planck statement when considered reversible hence we can conclude free expansion is an irreversible process. And hence PVY= constant can’t be valid.
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