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). Calculate the vapor pressure of 3 pentanone (b.p. 102.0 C) 5 gram Delta 8 Disposable THC HHC Vape Pen with Preheat 4asvapes Vaping Products Standard enthalpy of vapourisation `Delta_("vap")H^( )` for water at `100^@C` is `40.66 kJ mol^( 1)`. The internal energy of vapourisation of water at `100^@C` (in kJ `mol^( 1)`) is (Assume water vapour to behave like 5.4: Vapor Pressure Chemistry LibreTexts