The density of air is 0.001293 g / cc at STP. Its vapour density is

Question

The density of air is 0.001293 g / cc at STP. Its vapour density is (A) 0.001293 (B) 8.2786 (C) 14.49 (D) 6.2706

Tardigrade Admin · Accepted Answer

Density =0.001293 g / cc or 1.293 g / L Molecular mass =(R T d/P) =(0.0821 × 273 × 1.293/1) =28.98 g / mol Molecular mass =2 × vapour density VD =(28.98/2)=14.49

Q. The density of air is $0.001293 g / cc$ at STP. Its vapour density is

0.001293

8.2786

14.49

6.2706

Density $= 0.001293 g / cc$ or $1.293 g / L$
Molecular mass $= \frac{RT d}{P}$
$= \frac{0.0821 \times 273 \times 1.293}{1}$
$= 28.98 g / m o l$
Molecular mass $= 2 \times$ vapour density
$V D = \frac{28.98}{2} = 14.49$

Q. The density of air is 0.001293g/cc at STP. Its vapour density is