Question

The density of gas is 2 relative to oxygen under the same conditions the molecular weight of the gas is

Answer 1

Answer:

Using the relation,

ρ=  RT /PM

Under the same conditions,

ρ∝M

⇒  M1/ M2=  ρ1/ρ2

Given,ρ2 =2*ρ1

Molecular weight of Nitrogen=M1

​                                            =28 g mol^−1

M2=28*2ρ1/ρ1

M2=56 g mol^-1