Maybe somebody can explain this to me and I will have a better understand of the Isothermal expansion problem. Here is what I know:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\Delta[/tex]U(T)=0

but internal energy is also a state function. So if I expand from P1,V1 to P2,V2 isothermally then how can internal energy not change. Internal energy is a state function and depends on the state which has changed.

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# Isothermal expansion/compression

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