Chemical Thermodynamics 6.7 - Standard Entropy Correction

Short lecture on the entropy change going from a non-ideal to an ideal gas under standard conditions.

The standard state of gas is an ideal gas at 1 bar of pressure. To correct for the entropy of a non-ideal gas, we first expand the non-ideal gas to nearly zero pressure, then compress it back to 1 bar as an ideal gas.

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[nkyu]

1) In yellow equation of Z, You switched 1/Vbar to P/RT as if an ideal gas. Is it some kind of assumption?

2) When I do the same process with B_2P, It gets out of hand. Did you use B_2V to avoid this?