(34) Using a Joule-Thomson experiment, we want to cool a real gas from 350K to 2

Question

(34) Using a Joule-Thomson experiment, we want to cool a real gas from 350K to 200K. It is known that Ujt= 221K/atm and Cp (T)=6.5 cal / mole.K, and that these two quantities do not depend strongly on temperature in the range of (100K to 400K). If the gas was initially 4 atm, calculate its final pressure (34) Using a Joule-Thomson experiment, we want to cool a real gas from 350K to 200K. It is known that Ujt= 221K/atm and Cp (T)=6.5 cal / mole.K, and that these two quantities do not depend strongly on temperature in the range of (100K to 400K). If the gas was initially 4 atm, calculate its final pressure (34) Using a Joule-Thomson experiment, we want to cool a real gas from 350K to 200K. It is known that Ujt= 221K/atm and Cp (T)=6.5 cal / mole.K, and that these two quantities do not depend strongly on temperature in the range of (100K to 400K). If the gas was initially 4 atm, calculate its final pressure

Explanation / Answer

i feel some data is missing

Ujt =( dT/dP) = (-350+200)/(p-4)=221

-150/221 = P-4

p=4-0.6787 atm =3.321 atm

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