How do you calculate Delta HVAP?
Similarly, the amount of energy absorbed when a substance melts, and released when the same amount of substance freezes, is the same. Sublimation, a substance going straight from solid to gas phase, also involves the absorbing of energy.
solid
gas
How much energy does water gain during melting?
10.10: Enthalpy of Fusion and Enthalpy of Vaporization
What is the delta H vaporization of water?
Re: 4I. 3. In part (a), the equation you use to calculate the standard enthalpy of vaporization is delta S (vap) = delta H (vap) / T(boiling point in K). So you get delta H (vap) = (85 J/K)(80 + 273 K) = 30,005 J or 30.0 kJ.
