So, if I want to calculate the molar enthalpy of heat of ethanol considering the ideal vapor phase I have to use this equation...
(http://b.imagehost.org/0244/CC1_8.jpg) (http://b.imagehost.org/download/0244/CC1_8.bmp)
...right ?
And in order to calculate the molar enthalpy of heat of ethanol considering the real behaviour of the vapor phase then I have to use this equation...
(http://b.imagehost.org/t/0244/CC.jpg) (http://b.imagehost.org/view/0244/CC.png)
...right ? Or wrong ?
Here are the values that I have:
(http://b.imagehost.org/0245/T_8.jpg) (http://b.imagehost.org/download/0245/T_8.bmp)
I used the second equation and the value I got for enthalpy was negative. Is this normal ? I'm assuming not. So what am I doing wrong ?