Let’s say we have a 1 mol system in a state A (Pa,Va,Ta are given) and we take it to a state B(Pb,Vb are given) . We want to know what’s the maximum work we can give to a reversible work source. Considering the process is carried out attached to a 150 K heat source, the only data available is this:(adsbygoogle = window.adsbygoogle || []).push({});

1. equation of adiabatic reversible curve

2. Cp (heat capacity at a given constant pressure (Pa )

3. (expansion coefficient at a given constant pressure (Pa )

I’ve translated the problem into this: find A Helmholtz free energy change between points A and B. However I don’t know how to get dF=-SdT-PdV from the experimental coefficients mentioned above.

I’d appreciate your help very much.

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# Helmholtz free energy

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