- Consider Methane (Pc = 666 psia, Tc = – 117 F) and Ethane (Pc = 706 psia, Tc = – 90 F) stored in two different vessels at the following conditions:
|Methane Vessel||P = 1332 psia T = 55 F|
|Ethane Vessel||P = 1412 psia T = 95 F|
Using the Standing-Katz Z-factor plot, determine the compressibility factor of both substances. Any observation? Are those values different? Describe the situation for both gases. If their Z-factors are the same, does it mean that both gases have the same density? What does it mean?