Blast furnace gas analyzing 25.2% N2, 7.8% CH4, 25.8% CO, 28.1% H2, 1.2% O2, 6.9% C2H4 and 5% CO2 saturated with water vapor at 25C and 750 torrs enters a furnace as fuel for combustion. The air entering at 70%RH, 30C, 750mmHg is supplied at 55 m3

for every 5 m3 of fuel charged. a. What is the %excess of air supplied? b. If 90% of the C burns to CO2 and the rest to CO, what is the orsat analysis of the stack gas? c. How much SG would be produced in m3 per m3 of fuel? d. What is the partial pressure of water in the stack gas?