Video answer for \Delta_{\text {vap }} \mathrm{H}^{\Theta} for water is +40.79 \mathrm{kJ} \mathrm{mol}^{ 1} at 1 bar and 100^{\circ} \mathrm{C}. Change in internal energy for this vapourisation under phase diagram water.svg when do we use this two equation? is there a specific condition on when to use them ? : r ChemicalEngineering Vapor Pressure PPT Enthalpy (H) PowerPoint Presentation, free download ID:5592552
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