Given :
2N2O5(g) → 4NO2(g) + O2(g)
Rate of formation of NO2 = \(\frac{d[NO_2]}{dt}\) = 0.04 Ms-1
From the reaction,
Rate of consumption of N2O5 is half the rate of formation of NO2 since when 2 moles of N2O5 are consumed, 4 moles of NO2 are formed.

Rate of formation of O2 is one-fourth rate of formation of NO2.

Rate of reaction,

∴ (i) Rate of consumption of N2O5 = 0.02 Ms-1
(ii) Rate of formation of O2 = 0.01 Ms-1
(iii) Rate of reaction = 0.01 Ms-1