Question

Calculate the internal energy and enthalpy changes that occur when air is changed from an initial state of 277 K and 10 bars, where its molar volume is 2.28 m²/kmol to a final state of 333 K and 1 atm. Assume for air PV/T is constant (i.e it is an ideal gas) and Cv = 21 and Cp = 29.3 kg/kmol-¹ ​

Answer 1

PV/T is constant and that CV=21 kJ/kmolK and CP=29.3 kJ/kmol.K

Step-by-step explanation:

To calculate the internal energy and enthalpy change for the given air system, we can use the first law of thermodynamics, which states that the change in internal energy of a system is equal to the heat added to the system minus the work done