Question: Air undergoes an isothermal process at 100 C from 200 kPa to 6000 kPa. Calculate the enthalpy and entropy changes using the van der Waals

Air undergoes an isothermal process at 100° C from 200 kPa to 6000 kPa. Calculate the enthalpy and entropy changes using the van der Waals equation of state P = RT / (v - b) - a/v2. Assume that the specific heat depends on temperature only. Then compare the results with those assuming constant specific heat with Cp = 1.0 kJ/kg ∙ K.

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