Question

Volume of air needed for complete conversion of 100cm3 of no to no2

Answer 1

2NO2 + O2 → 2NO3.

Now 22400 cm3 NO2 reacts with 11200 cm3

Therefore 1000 cm3 reacts with 50 cm3 of air

But air conatins 20% 02 so answer is

50×100/20 ie 250cm3 needed