What is a reasonable way to examine if the ideal gas assumption for your system is valid?
A. Determine the system pressure. If the pressure is at most 0.3 MPa, then the system will behave as an ideal gas.
B. Calculate the reduced pressure of the system (using an average critical pressure). If that value is more than 0.7, then the ideal gas assumption is reasonable.
C. Calculate the actual mixture fugacity coefficients of the components. If they are close to one, you know the ideal gas assumption is reasonable.
D. All of the above are reasonable.
E. None of the above are reasonable.
A. Incorrect. While low pressure is a rule-of-thumb for the applicability of the ideal gas law, it is not valid for all systems at low pressures.
B. Incorrect. Even if you calculated the value mentioned, a large value would mean higher pressure.
C. Correct. The values of the mixture fugacity coefficients will provide you with insight as to the validity of the ideal gas assumption.
D. Incorrect. At least one way is unreasonable.
E. Incorrect. At least one way is reasonable.
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