Question

The vapour density of a gas is 11.2. The volume occupied by 11.2$g$ of this gas at N.T.P. is:

• A. $1L$
• B. $11.2L$
• C. $22.4L$
• D. $20L$

Answer 1

The correct option is B $11.2L$

Molecular weight $=V.d.\times 2=11.2\times 2=22.4$

Volume of $22.4gm$ Substance of NTP $=22.4$ litre

$1gm$ substance at NTP $=\frac{22.4}{22.4}$ litre

$11.2gm$ substance of NTP $=11.2$ litre