A mixture contains N2O4 and NO2 in 2: 1 ratio by volume. The vapour density of the mixture is

Question

A mixture contains N2O4 and NO2 in 2: 1 ratio by volume. The vapour density of the mixture is (A) 45.4 (B) 49.8 (C) 32.6 (D) 38.3

Tardigrade Admin · Accepted Answer

Vapour density of mixture =(n1 d1 + n2 d2/n1 + n2) Here molecular weight of NO2 = 46 Molecular weight of N2O4=92 Density =(m o l e c u l a r w e i g h t/2) =(2 × 46 + 1 × 23/2 + 1)=38.3

Q. A mixture contains $N_{2} O_{4}$ and $N O_{2}$ in 2 : 1 ratio by volume. The vapour density of the mixture is

45.4

49.8

32.6

38.3

Vapour density of mixture $= \frac{n _{1} d _{1} + n _{2} d _{2}}{n _{1} + n _{2}}$

Here molecular weight of $N O_{2}$ = 46

Molecular weight of $N_{2} O_{4} = 92$

Density $= \frac{m o l ec u l a r w e i g h t}{2}$

$= \frac{2 \times 46 + 1 \times 23}{2 + 1} = 38.3$

Q. A mixture contains N2​O4​ and NO2​ in 2 : 1 ratio by volume. The vapour density of the mixture is