The Redlich-Kwong equation of state is given by

Where R = the universal gas constant [= 0.518 kj/(kg K)], T = absolute temperature (K), p = pressure (kPa), and ?? = the volume of a kg of gas (m3/kg). The parameters a and b are calculated by

Where pc = critical pressure (kPa) and Tc = critical temperature (K). As a chemical engineer, you are asked to determine fuel (pc = 4580kPa and Tc = 191 K) that can be held in a 3-m3 tank at a temperature of -50o C with a pressure of 65,000 kPa. Use a root-locating method of your choice to calculate ?? and then determine the mass of methane contained in thetank.

Transcribed Image Text:

RT v(v + b)/T