Molecular entropy

In the lower temperature range, where the Antoine equation is not valid, entropy is given as a function of temperature.

H2(g) H2O(g) NH3(g)
N2(g) H2S(g) CH4(g)
C2H2(g) C2H4(g) C2H6(g)
H2O(l) N2(l) NH3(l)
H2S(l) CH4(l) C2H4(l)


H2O(s) N2(s) NH3(s)
H2S(s) CH4(s) C2H2(s)



[1] American Chemical Soc, American Institute of Physics, National Bureau of Standards, 1986: JANAF Thermochemical Tables (3rd. Edition), Part I, II. American Chemical Society,

2004-05-27 SUGIYAMA Ko-ichiro (sugiyama(at)