Question

How to calculate boiling point given delta h and delta s?

Answer 1

If the enthalpy of vaporization delta H and entropy of vaporization delta S are known (for very many substances they are available in tables), set the Gibbs free energy of vaporization delta G = delta H minus T delta S = 0. Then the temperature of the boiling point is T = delta H/delta S. Trouton's rule, which states that the entropy of vaporization for many substances at 1 atmosphere pressure is approximately 21 cal/degree-mole, may be helpful for cases where delta S values are not available in tables.