the vapor pressure of the liquid at a temperature T2 ... Now, it's important to realize that the normal boiling point of a substance is measured at an atmoshperic ... ΔHvap=−ln(134mmHg760mmHg )⋅8.314J mol−1K−1 (1(273.15+0)−1(273.15+40))K−1 ... Give equations that can be used tocalculate the .
Now try it yourself :)