1. Determine the reversible work required for the steady reversible isothermal compression of natural gas at 230 K from P1 = 150 bar to P2 = 250 bar. Assume gas to be CH4. Use the Kesler charts.
2. Determine the value of ϕ for water at 250 bar and 673 K (i.e., PR = 1.132, and TR = 1.349).