States of Matter 1 Question 30

«««< HEAD

30. The rate of diffusion of methane at a given temperature is twice that of a gas $X$. The molecular weight of $X$ is

======= ####30. The rate of diffusion of methane at a given temperature is twice that of a gas $X$. The molecular weight of $X$ is

3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed (a) 64.0

(b) 32.0

(c) 4.0

(d) 8.0

(1990, 1M)

Show Answer

Solution:

  1. $\frac{r_{\mathrm{CH}{4}}}{r{X}}=2=\sqrt{\frac{M_{X}}{16}} \Rightarrow M_{X}=64$