Nitrogen has a specific volume of 0.25 m3/kg. Using both the ideal gas law and van der Waals equation, tabulate the temperature of the nitrogen for pressures varying between 250 kPa and 2500 kPa, and plot the difference between the two values as a function of pressure.
Given: v = 0.25 m3/kg, N2
What will be an ideal response?
For N2, R = 0.2968 kJ/kg-K
From the ideal gas law: T = Pv/R
For van der Waals Equation, we need the constants a and b:
First, for N2, Tc = 126.2 K, Pc = 3390 kPa
Then, a = 
From van der Waals equation: 
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