Liquid benzene at 25°C and 1.2 bar is converted to vapor at 200°C and 5 bar in
a two-step steady-flow process: vaporization in a counterflow heat exchanger at
1.2 bar, followed by compression as a gas to 5 bar. Determine the duty of the
exchanger and the power requirement of the compressor in kJ⋅mol−1. Assume a
compressor efficiency of 75%, and treat benzene vapor as an ideal gas with constant
CP = 105 J⋅mol−1⋅K−1.