Hey, I am not sure whether you have a slight mistake in the vibrational entropy function, but is it not - ln(1-exp(-7.5667).. instead of +ln(1-exp(-7.5667)? Thank you
Hi Panyakorn. I believe absolute entropy of substances are typically compiled by a combination of calorimetry and crystallography. In certain cases the statistical models presented here (or more advanced extensions of them) may be very accurate, but theory must always be validated by experiment. In science, empiricism is king. If a model doesn't match precise, well-designed measurements of the properties of real systems, it is most likely the model which is incorrect and needs refining. Crystallography can verify the residual entropy near absolute zero, and calorimetry can extend that value to any finite temperature an apparatus can handle.
Hey, I am not sure whether you have a slight mistake in the vibrational entropy function, but is it not - ln(1-exp(-7.5667).. instead of +ln(1-exp(-7.5667)? Thank you
The absolute entropy in thermodynamics table is calculated from calorimetric method or statistical method?
Hi Panyakorn. I believe absolute entropy of substances are typically compiled by a combination of calorimetry and crystallography. In certain cases the statistical models presented here (or more advanced extensions of them) may be very accurate, but theory must always be validated by experiment. In science, empiricism is king. If a model doesn't match precise, well-designed measurements of the properties of real systems, it is most likely the model which is incorrect and needs refining. Crystallography can verify the residual entropy near absolute zero, and calorimetry can extend that value to any finite temperature an apparatus can handle.