[fozfate]

Feel like I'm making a stupid oversight, but can't for the life of me figure out how to solve this.

Problem:

Use the vapor pressures of ClF3 given in the following table to calculate the enthalpy of vaporization using a graphical method or a least squares fitting routine.

T (Celsius)   P(torr)     
-246.97       29.06
-41.51         42.81
-35.59         63.59
-233.14      74.31
-27.17          107.66
-30.75           86.43

[Yggdrasil]

Look up the Clausius Clapeyron equation in your textbook or on wikipedia (http://en.wikipedia.org/wiki/Clausius-Clapeyron_relation).