Finding Delta H using ln P vs 1 T (Hvap Lab) Standard Enthalpy of Formation, \(\Delta H_{\rm f}^\circ \) thermodynamics $\Delta \bar{h}_{vap}$ and $\Delta \bar{s}_{vap}$ from vapor pressure vs. temperature data Chemistry Stack Exchange Answered: Which of the following substances would you predict to have the highest change of enthalpy of vaporization? CH4, I2, KI, HF, CS2 bartleby 10.10: Enthalpy of Fusion and Enthalpy of Vaporization Chemistry LibreTexts 3 Ways to Calculate Vapor Pressure wikiHow