Question

im doing a lab whwre i have to dind the joule thomson coefficients for the data i collected using μt = b- 2a/RT and μH= (2a/rt -b)/cp. first of all what does μT and μH mean and second of all what temperature do I use for T

Answer 1

The variation of enthalpy H with pressure P at a constant temperature T:

The variation of temperature T with pressure P at a constant enthalpy H:

For real or Vander Waal's gas,

Assuming ab<<1, one can get

and

The inversion temperature is the temperature at which

For cooling of gas, one has to take a temperature for which