Question: In a continuous manufacturing process, chlorodifluoromethane (CHClF 2 ), initially at 10 bar and 420 K, passes through an adiabatic pressure-reducing valve so that its

In a continuous manufacturing process, chlorodifluoromethane (CHClF₂), initially at 10 bar and 420 K, passes through an adiabatic pressure-reducing valve so that its pressure drops to 0.1 bar (this last pressure low enough that CHClF₂ can be considered to be an ideal gas). At these operating conditions, the gas can be represented by a one-term virial equation of state:

PV RT The following data are available for this gas: and = 1+ B (T) V B (T) = 297.6 - 256100 cm T mol Cp

What is the temperature of the chlorodifluoromethane exiting the valve?

PV RT The following data are available for this gas: and = 1+ B (T) V B (T) = 297.6 - 256100 cm T mol Cp 27.93 +0.093T = J mol K

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