Deriving the equation for lines of constant enthalpyby djkuehlos14 Tags: chemical engineering, enthalpy, pv diagram, thermodynamics 

#1
Feb1613, 08:45 AM

P: 1

How would one derive the equation for (dP/dV)H? That is the partial of P over the partial of V, holding H constant. I've tried many different things, triple product rule, maxwell relationships, and nothing seems to work. I appreciate any advice.




#2
Feb1913, 09:36 PM

Sci Advisor
HW Helper
Thanks
PF Gold
P: 4,507

[tex]dT=(\frac{\partial T}{\partial P})_VdP+(\frac{\partial T}{\partial V})_PdV[/tex] You need to combine this with the equation: [tex]dH=C_PdT+(VT(\frac{\partial V}{\partial T})_P)dP[/tex] 


Register to reply 
Related Discussions  
using enthalpy when pressure is not constant  Classical Physics  8  
Change in enthalpy at constant VOLUME  Classical Physics  7  
Enthalpy change at constant volume?  Classical Physics  3  
enthalpy of reaction as function of the equilibrium constant kp  Classical Physics  0  
Enthalpy at constant pressure.  Biology, Chemistry & Other Homework  2 