Posted by Marcus on Monday, March 11, 2013 at 2:34am.
I'm working on a problem dealing with calculating the heat of vaporization for vapor pressures problem.
By substituting the problems values into the ClausuisClapeyron equation I get:
.642= (2.28x105) x Delta H vap (J/mol)
However, from this point I don't know how to calculate a correct Delta H value?

Chemistry  DrBob222, Monday, March 11, 2013 at 11:01am
It would be easier to help if you posted the complete problem along with the work you've done. If you're sure of what you've done to this point, the next step is
dHvap = 0.642/2.28E5