temperature. The degree of dissociation of N, O, at
vapour density of N2O4 is 45.86 at a certain
the same temperature would be approximately
(1) 0.003
(2) 0.03
(3) 0.3
(4) 0.0003
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The relationship between molar mass and vapour density is Molar mass =2× vapour density =2×30=60
N
2
O
4
NO
2
Initial moles
1
0
Moles at equilibrium
1−α
2α
Mole fraction
(
1+α
1−α
) (
1+α
2α
)
Thus 92(
1+α
1−α
)+46(
1+α
2α
)=60
α=0.533
The percentage dissociation of N
2
O
4
is 53.3%.
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