- #1
samjohnny
- 84
- 1
Homework Statement
Consider a gas (note: treat as ideal) that has phase coexistence between diatomic and monatomic forms at ##T_0## and ##P_0##. Compute the equation for the P,T phase boundary between monatomic and diatomic gases.
Homework Equations
## u_v (V,T) = \frac{5}{2} RT - \frac{a}{v} - u_b ##
## u_i (V,T) = \frac{5}{2} RT - u_b ##
Where ##u_b ## is the energy holding atoms together in a diatomic gas.
And ## u_i ## and ## u_v ## are the molar energies of ideal and van der waals diatomic gases respectively.
The Attempt at a Solution
I'm assuming that the equation for the phase boundary has something to do with computing ##\frac{dP}{dT}##. So the first thing that springs to mind is the Clausius Clapeyron, however, how to relate that to the equations given for the internal energies I'm not sure.