A 10 lb block of dry ice is placed in a 50 cu ft tank that contains air at atmos
ID: 236956 • Letter: A
Question
A 10 lb block of dry ice is placed in a 50 cu ft tank that contains air at atmospheric pressure 14.7 psia and 75F. What will be the final pressure of the sealed tank when all the dry ice has evaporated and cooled the gas to 45F?Petroleum Engineering-Applied Reservior Engineering problem. A 10 lb block of dry ice is placed in a 50 cu ft tank that contains air at atmospheric pressure 14.7 psia and 75F. What will be the final pressure of the sealed tank when all the dry ice has evaporated and cooled the gas to 45F?
Petroleum Engineering-Applied Reservior Engineering problem. Petroleum Engineering-Applied Reservior Engineering problem.
Explanation / Answer
10 lb of CO2 = 4536 gram
= 4536/44 moles
= 103.09 moles
Using ideal gas law,
n1= P1V1/RT1
Lets convert in SI units
=(14.7*6895)*0.02832*50/(8.3*297)
= 58.22 moles
n2=58.22+103.09 = 161.31
Final pressure P2= P1*n2/n1*T2/T1
= 14.7*161.31/58.22*280.37/297.04
= 38.44 psia
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