Deriving PV^n=constant for polytropic processes

Taniya Burns 2022-07-22 Answered
Deriving P V n = constant for polytropic processes?
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Answers (1)

bardalhg
Answered 2022-07-23 Author has 15 answers
The dU here is an exact differential:
d U ( T , V ) = ( U T ) V d T + ( U V ) T d V
rather than the derivatives you have. Hence, you cannot cancel the dT's and dV's as you've done.
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