The vapour density of a mixture containing NO2 and N2O4 is 27.6 . Mole fraction of NO2 in the mixture is:

Answer Key: 0.2 Mole

N2O4 on decomposition gives its monomer NO2 and they are found to be in equilibrium at 300 K. if the VD of such a mixture is 41.4 the calculate % composition by (1) Moles of NO2 and N2O4 (2) By mass O2

Answer Key: (1) 20% and 80% (2) 11.1%