The equivalence ratio of a combustion process often isdetermined by extracting a sample of the exhaust gas and measuringthe concentrations of major species. In a combustion experimentusing iso-octane fuel (C8H18) and air, gas analyzers monitoring theexhaust gas measure a CO2 concentration of 6 percent by volume anda CO concentration of 1 percent by volume. a. Derive an expressionfor the equivalence ratio ? in terms of the measured volumefractions of CO and CO2 in the exhaust products. Assume that theoverall combustion process is lean – but be sure to allow for CO inthe products. (Stoichiometric considerations alone are sufficient.)b. What is the value of the equivalence ratio ? for the conditionsgiven? c. If an O2 analyzer were monitoring the exhaust gas, whatvalue would it report (that is, what is the volume percent of O2 inthe exhaust products)?

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a The equivalence ratio is a measure of the ratio of the actual amount of fuel to the stoichiometric amount of fuel for a combustion reaction It is ca... View the full answer