Question

What is the formulae to calculate the minimum amount of oxygen required for combustion?

(a) Minimum O2 required = theoretical O2 required + O2 present in fuel

(b) Minimum O2 required = O2 present in fuel

(c) Minimum O2 required = theoretical O2 required – O2 present in fuel

(d) Minimum O2 required = O2 present in fuel – theoretical O2 required

I got this question in quiz.

The query is from Numerical Problems Based on Combustion and Fuel Gas Analysis topic in division Fuels and Combustion of Engineering Chemistry II

Answer 1

The correct option is (c) Minimum O2 required = theoretical O2 required – O2 present in fuel

Best explanation: The minimum oxygen required should be calculated on the basis, that complete combustion is taking place according to theoretical and stoichiometric combustion reactions. In case of partial combustion, the combustion products are CO.