Standard Enthalpy of Formation, \(\Delta H_{\rm f}^\circ \) Solved Heat, q, is energy transferred between a system and Chegg.com Vapor Pressure Latent Heat of Vaporization Delta Hvap of Water calculated by corresponding states correlation in a one cell excel formula Chem Eng Musings Calculate the enthalpy change for the process CCl4(g) gives C(g) plus 4 Cl(g) and calculate bond enthalpy of C Cl in CCl4(g). vp vs temp.svg