Thermodynamic properties of fluorine compounds. Part VIII. The heat capacity and entropy of 2,3,4,5,6-pentafluorotoluene

Abstract

The heat capacity of 2,3,4,5,6-pentafluorotoluene has been measured in the condensed (crystal, 11–237°K; liquid, 248–376°K; and vapour, 383–473°K) states. The heats of fusion and vaporisation have also been measured. The entropies at 298·15°K; are 306·4 deg.^–1 mole^–1(liquid) and 413·6 J deg.^–1 mole^–1(ideal gas at 1 atm. 101·325 kNm.^–2). Thermodynamic functions of pentafluorotoluene in the crystal and liquid states have been calculated.