Vaporization energy

When thermal or chemical energy is used to remove a volatile species, we call the method volatilization gravimetry. In determining the moisture content of food, thermal energy vaporizes the H2O. The amount of carbon in an organic compound may be determined by using the chemical energy of combustion to convert C to CO2. 

This energy vaporizes the liquid. If AHv is the heat of vaporization of the liquid, the mass of liquid vaporized mv is given by... 

Figure 15-27. Normalized fluorescence excitation spectra of ABN, DMABN, and DIABN in a free jet. The excess energies are with respect to their origin bands. Inset plots represent the fluorescence lifetimes (in ns), measured as a function of the S excess vibrational energy. Vapor-phase absorption spectra of ABN and DIABN are also shown (dashed curves). (Reprinted with permission from Ref. [60].)...

Q As temperature increases, water molecules gain kinetic energy. Vapor pressure increases (black arrows) but is less than atmospheric pressure (red arrows). o A liquid has reached its boiling point when its vapor pressure is equal to atmospheric pressure. At sea level, the boiling point of water is 100°C. 

Surface and interfacial energies Vapor pressure of components Gas solubilities and diffusivities Solute diffusivities Phase equilibria... 

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