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claire791
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I am having trouble with the very last part of this question. I will write the whole question just to make sure that I haven't screwed up the first part too :)
When a certain freon used in refrigeration was expanded adiabatically from an initial pressure of 32 atm and 0degrees C to a final pressure og 1.00atm, temperature fell by 22K. Calculate the Joule Thompson coefficient at 0degrees, assuming that it remains constant over this temperature range.
JT = dT/dP = -22K/-31atm = 0.71K/atm
If the molar heat capacity at constant perssire, Cpm, for the freon is 30J/K/mol, calculate the isothermal Joule-Thomson coefficient.
IJT = Cpm x JT = -30J/K/Mol x 0.71K/Atm = -21J/Mol/Atm
Using this value, determine how much heat must be supplied to maintain constant temperature when 15.0 moles flow through a throttle and the pressure drop in 55atm?
I know that q = 0 so dU = w but I am unsure of where to go from here??
Any help would be much appreciated :)
When a certain freon used in refrigeration was expanded adiabatically from an initial pressure of 32 atm and 0degrees C to a final pressure og 1.00atm, temperature fell by 22K. Calculate the Joule Thompson coefficient at 0degrees, assuming that it remains constant over this temperature range.
JT = dT/dP = -22K/-31atm = 0.71K/atm
If the molar heat capacity at constant perssire, Cpm, for the freon is 30J/K/mol, calculate the isothermal Joule-Thomson coefficient.
IJT = Cpm x JT = -30J/K/Mol x 0.71K/Atm = -21J/Mol/Atm
Using this value, determine how much heat must be supplied to maintain constant temperature when 15.0 moles flow through a throttle and the pressure drop in 55atm?
I know that q = 0 so dU = w but I am unsure of where to go from here??
Any help would be much appreciated :)