Entropy Proof: Ideal Gas Expansion with Varying Temperature | Homework Question

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Homework Statement



Using the exact differential, state function characteristics of S prove that ΔS for step I is always > 0 for an ideal gas expanding adiabatically and irreversibly from point 1 at TA,PA to point 2 at TB,PB

can anyone help me with this one?
A key difference this one has over others is that temperature is varied and thus not a normal adiabatic process where it mirrors an isothermal one

Homework Equations



first law, second law, helmholtz and gibbs free energy equations? mayb

The Attempt at a Solution



I basically got the same outcome as a adiabatic irreversible expansion identical to a isothermal equation but have a feeling the assumptions leading up that are wrong
 
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Hi wangchungman, welcome to PF!:smile:

wangchungman said:
I basically got the same outcome as a adiabatic irreversible expansion identical to a isothermal equation but have a feeling the assumptions leading up that are wrong

We can't tell you whether what you did was wrong or or not unless you actually show what you did... Post your calculations and explain in detail any assumptions your are making.
 

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