On The Entropy of Hydrogen

Abstract

The entropy difference between ordinary hydrogen and hydrogen in perfect equilibrium, both in the solid phase at the absolute zero, has been calculated to be $\left(\frac{3}{4}\right)R log 3+R log 4$. This value checks the result given by Giauque and Johnston. The method is the direct evaluation along a reversible path of $\int \frac{\mathrm{dQ}}{T}$ under certain idealized assumptions, using partition functions. The thermodynamical and statistical aspects are examined.