Vapour Density

In the dissociation of N_(2)O_(4) into NO_(2), (1+ alpha) values with the vapour densities ratio ((D)/(d)) is given by: [ alpha degree of dissociation, D-vapour density before dissociation, d-vapour density after dissociation]

The vapour densities of two gases are in the ratio of 1 : 3 . Their molecular masses are in the ratio of : -