The vapour density of a mixture consisting of NO2 and N2O4 is 38.3 at 275 K. The number of mole of N2O4 in 100 g of the mixture is
Mass of 1 mole of mixture = vapour density × 2 = 76.6
Number of moles in the mixture =
Let the mass of NO2 be x
x=20.1
Number of moles of NO2 present in 100gm of the mixture =