The ammonia (NH3) oxidation process occurs over a catalyst as

Q. The ammonia (NH3) oxidation process occurs over a catalyst as

4 NH₃ + 5O₂ —-> 6H₂O + 4 NO

Air is supplied such that oxygen (O2) is 20% in excess of that required for complete conversion of NH3. The mole fraction of O2 in inlet gas mixture (NH3 + air) is _________________(rounded off to third decimal place)

Ans: 0.170 to 0.200