This calculator calculates the molar enthalpy of vaporization (δhvap) using initial temperature (t1), final temperature (t2), vapour pressure at temperature t1 (p1), vapour pressure at temperature t2 (p2) values.
Formula:
ΔHvap= (R* ln(p2/p1 ))/((1/T1)-(1/T2))
Where,T1 - Initial Temperature
T2 - Final Temperature
p1 - Vapour pressure at initial temperature
p2 - Vapour pressure at final temperature
R - Gas constant (8.31447