A gaseous fuel is a mixture of equal parts by volume of carbon monoxide and methane (CH4) The gas burns with a quantity of air which is 20% greater than the stoichiometric amount. The products of Combustion, which contain only CO2, CO, H2O, H2, O2 and N2, are in equilibrium when they are discharged at atmospheric pressure. If the carbon monoxide If the carbon monoxide content of the content of the exhaust is not to exceed 1% by volume, show that the temperature of the exhaust must not be greater than 2,360°K approximately. Calculate also the hydrogen content of the exhaust.
At 2,360°K the equilibrium constants, based on a reference pressure p0 of one atmosphere, have the values
Both equilibrium constants decrease with increasing temperature. Air contains 21% oxygen by volume.