For the reaction `N_2O_4 hArr 2NO_2(g)`, if percentage dissociation of `N_2O_4` are 20%, 45%, 65%, 80% then the sequence of observed vapour densities wil be :

Options

A. `d_(1)gtd_(2)gtd_(3)gtd_(4)`
B. `d_(4)gtd_(3)gtd_(2)gtd_(1)`
C. `d_(1)=d_(2)=d_(3)=d_(4)`
D. `(d_(1)=d_(2))gt(d_(3)gt d_(4))`

Answer

A

Explanation

`alpha=(D-d)/((n-1)d)`
`alpha=(D-d)/(d)`
`d=(D)/(alpha+1)`
More `alpha` Less d