Pure ethylene (C2H4) and oxygen are fed to a process for the manufacture of ethylene oxide (C2H4O) C2H4 + ½ O2? C2H4O The process flow diagram is shown below. The catalytic reactor operates at 300 °C and 1.2 atm. Under these conditions, the ethylene conversion per pass is 50% and, of the ethylene consumed, 70% is converted to ethylene oxide. The rest of the ethylene reacts to form CO2 and water vapor (undesired reaction) C2H4 + 3O2? 2CO2 + 2H2O For a daily production of 10,000 kg of ethylene oxide:

(a) Calculate the m3/h of total gas entering the reactor at STP if the ratio of O2(g) fed to fresh C2H4(g) fed is 3:2.

(b) Calculate the recycle ratio in m3 at 10 °C and 100 kPa of ethylene recycled, per m3 at STP of fresh ethylene fed.

(c) Calculate the m^3of the mixture of CO2, O2, and H2O leaving the separator per day at 80 °C and 100 kPa