E2.9 Isothermal Process

Example 2.9 The same gas as in the previous example is compressed isothermally from 1 atm and 70 °F to 5 atm. Find the point and path functions. V₁ = 386.6 ft³/lbmol

Solution

Internal energy change for ideal gas (ΔU) (Equation 2.32):

Work done by the system, W (Equation 2.33):

Heat added to the system, Q (Equation 2.21)

Entropy change, ΔS (Equation 2.34):

Final volume, V₂ (Equation 2.35):