P3C.7 The compound 1,3,5-trichloro-2,4,6-trifluorobenzene is an intermediate in the conversion of hexachlorobenzene to hexafluorobenzene, and its thermodynamic properties have been examined by...

Extracted text: P3C.7 The compound 1,3,5-trichloro-2,4,6-trifluorobenzene is an intermediate in the conversion of hexachlorobenzene to hexafluorobenzene, and its thermodynamic properties have been examined by measuring its heat capacity over a wide temperature range (R.L. Andon and J.F. Martin, J. Chem. Soc. Faraday Trans. I 871 (1973)). Some of the data are as follows: T/K 14.14 16.33 20.03 31.15 44.08 64.81 Cam/(JK'mol") 32.54 9.492 12.70 18.18 46.86 66.36 P.m T/K 100.90 140.86 183.59 225.10 262.99 298.06 Cp/(JK"mol") 163.7 95.05 121.3 144.4 180.2 196.4 P.m' Determine the Third-Law molar entropy of the compound at 100 K, 200 K, and 300 K.