Question

The densities of methane and oxygen are in the ratio 1 : 2. The ratio of the rates of diffusion of oxygen and methane will be:

• A. 1 : 2
• B. 2 :1
• C. 1.414:1
• D. 1:1.414

Answer 1

The correct option is D 1:1.414

Using Graham's law of diffusion,

$\frac{r_{C{H}_4}}{r_{o_2}}=\sqrt{\frac{M_{o_2}}{M_{C{H}_4}}}=\sqrt{\frac{32}{16}}=1.414$