Compound Tb /K DvapH /kJ.mol-1 CH3Cl 247 21.5 CH2CHCHCH2 268.6 22.47 C2H5OH 351.39 38.7 H2O 373.15 40.7 CH4 111.7 8.17 HCO2H 373.9 22.69 CH3OH 337.8 35.21 C8H18 398.7 34.41 C6H5CH3 383.8 33.18