Question

19. Which of the following gas will diffuse more rapidly at STP? A. Oxygen gas B. Carbon dioxide gas C. Chlorine gas D. Methane gas
explain why?​

Answer 1

Answer:

B. Carbon dioxide gas

Explanation:

Which states that the rate of effusion of a gas is inversely proportional to its density. This means, the heavier the gas is(in terms of its molecular weight), the slower it is. Hence, ammonia is lighter and from Graham's law of effusion, it then means that it will diffuse faster than CO2, which is heavier

At any given temperature, small, light molecules (such as H2, hydrogen gas) diffuse faster than larger, more massive molecules (such as N2, nitrogen gas) because they are traveling faster, on average (see heat; kinetic-molecular theory of gases).

Answer 2

Answer:

methane gas

Explanation:

since the rate of diffusion is inversely proportional to the molar mass and methane has the lowest molar mass i.e 16. hence it would diffuse more rapidly. Also the density of methane is lowest as density and molar mass are proportional. Hopefully this would help!!

thanks.