Thermodynamic properties of ammonia as an ideal gas

Abstract

The rmodynami c fun ction s for ammonia as an ideal gas at one atmosphere pressure have bee n evaluated. The contribution of th e hi ghl y anharmon ic o ut-of-pla ne vibrational mode, in cludin g its large co upling with rotation a nd it s coupLin g with th e other vibrational modes, is cons id ered in detail.