Question

Why entropy is not zero while free energy of formation of element in its standard form is zero?

Answer 1

Any substance at room temperature will have some form of energy dispersal, so its absolute molar entropy cannot be zero. ... Same with the enthalpy of formation, because there is zero energy input/output resulting from the "conversion".

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Answer 2

Any substance at room temperature will have some form of energy dispersal, so its absolute molar entropy cannot be zero. ... Same with the enthalpy of formation, because there is zero energy input/output resulting from the "conversion